EN： In news headlines, the simple present tense ('Detect') is commonly used to refer to recent past events to make the news feel more immediate and urgent.
中文： 在新闻标题中，通常使用一般现在时（如 'Detect'）来表示最近发生的过去事件，以增加新闻的即时感与紧迫感。
Researchers discover new treatment for rare disease.
研究人员发现罕见疾病的新疗法。
EN： The past participle phrase 'Linked to...' functions as an adjectival modifier, reducing the relative clause 'which is/are linked to...' to post-modify the noun phrase 'Sugar Molecule'.
中文： 过去分词短语「Linked to...」（与……有关）在此作形容词修饰语，是由关系从句「which is/are linked to...」简化而来，用以从后方修饰名词短语「Sugar Molecule」（糖分子）。
The symptoms linked to the virus include fever and fatigue.
与该病毒相关的症状包括发烧和疲劳。
EN： The present perfect tense ('has identified') is used here to describe a recent discovery that has current relevance and ongoing impact on our scientific understanding.
中文： 此处使用现在完成时（'has identified'）来描述一项最近的发现，该发现对我们目前的科学理解具有即时的关联性与持续的影响。
The research team has developed a new method for analyzing atmospheric data.
该研究团队已开发出一种分析大气数据的新方法。
EN： The present participle phrase 'drifting through...' acts as an adjective modifying the noun phrase 'a remarkable organic compound', describing an ongoing state or action.
中文： 现在分词短语 'drifting through...' 在此作为形容词修饰名词短语 'a remarkable organic compound'，用以描述一个持续进行的状态或动作。
We observed several satellites orbiting around the Earth.
我们观察到几颗绕着地球运行的卫星。
EN： The noun phrase 'a discovery...' acts as an appositive to the entire preceding clause, summarizing the previous statement and introducing further elaboration via the relative clause 'that could...'.
中文： 名词短语 'a discovery...' 作为前面整个从句的同位语，对前述内容进行总结，并通过关系从句 'that could...' 引入进一步的阐述。
The government decided to fund the space program, a move that welcomed praise from scientists.
政府决定资助该太空计划，此举受到了科学家们的赞许。
EN： The past participle phrase 'known as...' acts as a reduced relative clause (which is known as...) modifying the noun 'sugar'. It is set off by commas here to provide non-essential, parenthetical information.
中文： 过去分词短语「known as...」（被称为……）在此作为简化关系从句（which is known as...），用以修饰名词「sugar」（糖）。此处用逗号隔开，提供非限制性的补充说明。
The compound, known as sodium chloride, is essential for human life.
这种被称为氯化钠的化合物，对人类生命至关重要。
EN： The em dash (—) is used to introduce an appositive or explanatory phrase that defines or elaborates on the preceding noun phrase 'the interstellar medium'. It adds a dramatic pause and provides descriptive details.
中文： 破折号（—）用于引入同位语或解释性短语，以定义或详细说明前述的名词短语「the interstellar medium」（星际介质）。它能增加语气上的停顿并提供描述性细节。
We visited the summit — a breathtaking peak covered in perpetual snow.
我们拜访了山顶——那是一个覆盖着终年积雪、美得令人屏息的山峰。
EN： The past participle 'scattered' functions as an adjective modifying 'clouds'. It is followed by the prepositional phrase 'throughout the galaxy' to indicate the spatial distribution of the clouds.
中文： 过去分词「scattered」（散布的）在此作形容词使用，修饰名词「clouds」（云）。其后接介词短语「throughout the galaxy」（整个星系中），用以表示这些云气在空间中的分布状态。
The islands, scattered throughout the Pacific Ocean, are home to unique species.
这些散布在太平洋各处的岛屿，是许多独特物种的家园。
EN： The sentence uses a compound predicate with the coordinating conjunction 'and', connecting an active voice verb ('occurs') and a passive voice verb ('is commonly used') sharing the same subject ('this same compound'). This structure allows for concise and cohesive writing in formal and scientific registers.
中文： 本句使用对等连词「and」来连接复合谓语，将主动语态动词（occurs）与被动语态动词（is commonly used）结合，两者共享同一个主语（this same compound）。这种结构能使正式与科学文体的写作更加简洁且具凝聚力。
The newly discovered enzyme breaks down plastic efficiently and is widely utilized in recycling facilities.
这种新发现的酶能高效分解塑胶，并被广泛应用于回收设施中。
EN： The sentence employs the sentence adverb 'Notably' at the beginning to draw the reader's attention to a significant or surprising fact. Sentence adverbs modify the entire clause that follows rather than a single verb or adjective.
中文： 本句在句首使用句子副词「Notably」（值得注意的是）来吸引读者注意某个重要或令人惊讶的事实。句子副词修饰的是其后的整个子句，而非单一动词或形容词。
Interestingly, the two species evolved similar traits despite living in completely different environments.
有趣的是，这两个物种尽管生活在完全不同的环境中，却演化出了相似的特征。
EN： The passive voice construction 'is commonly used' is employed here to focus on the action and the object being acted upon (the compound), rather than the agent performing the action (manufacturers or consumers), which is typical in scientific and technical descriptions.
中文： 此处采用被动语态结构「is commonly used」（常用于），旨在将焦点放在动作及承受动作的客体（该化合物）上，而非执行动作的主体（制造商或消费者），这在科学与技术性描述中非常常见。
This chemical agent is frequently employed in the preservation of organic specimens.
这种化学试剂经常被用于保存有机标本。
EN： The term 'self-tanning products' refers to cosmetics used to mimic a sun tan without exposure to harmful UV radiation. In Western beauty culture, tanned skin is often associated with health, leisure, and wealth, which drove the commercial development of these products. Erythrulose, mentioned in the context, is a key active ingredient in these formulations, reacting with amino acids in the skin to darken its appearance.
中文： 「self-tanning products」（仿晒产品，或称免晒美黑产品）是指无需暴露于有害紫外线即可模拟晒黑肤色的化妆品。在西方美容文化中，古铜色肌肤常与健康、休闲和财富联系在一起，这推动了此类产品的商业发展。上下文中所提到的「赤鲜酮糖」（erythrulose）是这些配方中的关键活性成分，它能与皮肤中的氨基酸产生反应以使肤色变深。
EN： The past participle phrase 'located in Spain' acts as an adjective modifying the noun phrase 'two dish-shaped radio telescopes'. This is a reduced relative clause, shortened from 'which are/were located in Spain'.
中文： 过去分词短语「located in Spain」作为形容词，修饰名词短语「two dish-shaped radio telescopes」（两台碟形电波望远镜）。这是一个简化的关系子句，由「which are/were located in Spain」缩减而来。
The laboratory equipment located in the basement is used for chemical analysis.
位于地下室的实验室设备是用于化学分析的。
EN： The infinitive phrase 'to gather...' functions as an adverbial of purpose, explaining why the researchers employed the radio telescopes.
中文： 不定词短语「to gather...」在此作为目的状语，解释研究人员为什么要使用这些电波望远镜。
The team used a supercomputer to simulate the formation of galaxies.
该团队使用超级电脑来模拟星系的形成。
EN： Compound adjectives like 'dish-shaped' are formed by combining a noun ('dish') with a past participle ('shaped') to describe the physical appearance or characteristics of an object.
中文： 像「dish-shaped」（碟形的）这样的复合形容词，是由名词（dish）与过去分词（shaped）结合而成，用来描述物体的外观或特征。
They observed several cone-shaped structures on the surface of the asteroid.
他们在小行星表面观察到了几个圆锥形的结构。
EN： The sentence mentions 'Spain' as a hub for astronomical research. Spain hosts several world-class observatories, such as those in the Canary Islands and the Sierra Nevada (where the IRAM 30-metre radio telescope is located). The spelling of 'centre' in the original text reflects British English (UK) standards, which is commonly used in international scientific journals like Nature Astronomy.
中文： 句子中提到「西班牙」作为天文研究的枢纽。西班牙拥有数个世界级的天文台，例如位于加那利群岛和内华达山脉（IRAM 30米电波望远镜所在地）的天文台。原文中「centre」的拼写反映了英国英语（UK）标准，这在国际科学期刊（如《自然天文学》）中非常常见。
EN： The prepositional phrase 'By + -ing' (gerund) is used to express the method or means by which an action is achieved. It answers the question 'How?'.
中文： 介系词短语「By + -ing」（动名词）用于表示达成某动作的方法或手段，用来回答「如何（How）」的问题。
By analyzing the chemical composition of the meteorites, researchers identified their origin.
通过分析陨石的化学成分，研究人员确认了它们的来源。
EN： The verb 'compare' is typically paired with the preposition 'with' (or 'to') to show the relationship or contrast between two entities. 'Compare A with B' is often preferred in formal scientific writing when examining similarities and differences.
中文： 动词「compare」通常与介系词「with」（或「to」）搭配，以显示两个实体之间的关系或对比。在正式的科学研究中，当检视相似之处与相异之处时，通常偏好使用「compare A with B」。
The scientists compared the new data with previous findings to ensure accuracy.
科学家们将新数据与先前的发现进行比对，以确保准确性。
EN： The noun phrase 'the presence of [something]' is a formal academic construction used to state that a substance or element exists or is located in a specific place, rather than using simpler verbs like 'is there' or 'exists'.
中文： 名词短语「the presence of [某物]」是一种正式的学术结构，用于陈述某种物质或元素存在于特定位置，而非使用较简单的动词如「is there」或「exists」。
Tests confirmed the presence of organic compounds in the soil samples.
测试证实了土壤样本中存在有机化合物。
EN： The use of a past participle phrase ('published in the journal Nature Astronomy') as a reduced relative clause. This construction modifies the noun 'findings' and is equivalent to 'which were published in...'. It is set off by commas because it provides non-essential (parenthetical) information.
中文： 使用过去分词短语（published in the journal Nature Astronomy）作为简化关系从句。此结构修饰名词「findings」，等同于「which were published in...」。因为其提供的是非本质性（插入语）的信息，所以前后用逗号隔开。
The report, written by a team of experts, highlights the urgent need for climate action.
这份由专家团队撰写的报告，强调了对气候采取行动的紧迫性。
EN： The post-modifier structure 'ever identified beyond Earth' using a past participle ('identified') followed by an adverbial phrase. 'Ever' is used here to mean 'at any time up to the present', commonly modifying superlatives or noun phrases to emphasize scope.
中文： 使用过去分词（identified）后接副词短语的后置修饰结构「ever identified beyond Earth」。此处的「ever」表示「截至目前为止的任何时候」，常用于修饰最高级或名词短语以强调范围。
This is the most complex protein ever synthesized in a laboratory.
这是实验室中合成过最复杂的蛋白质。
EN： The verb 'represent' used in an academic register to mean 'to be equivalent to' or 'to serve as a specimen or example of'. It is a more formal alternative to 'is' or 'are' when describing the significance of research findings.
中文： 动词「represent」在学术语境中的用法，意为「等同于」或「作为…的范例」。在描述研究结果的意义时，它是比「is」或「are」更正式的替代词。
These ancient ruins represent a major milestone in archaeological history.
这些古代遗迹代表了考古历史上的一个重大里程碑。
EN： The journal 'Nature Astronomy' is a highly prestigious, peer-reviewed scientific journal. Publishing findings here represents a significant milestone in the scientific community, indicating that the research has undergone rigorous scrutiny by global experts.
中文： 《自然天文学》（Nature Astronomy）是一本享有极高声誉、经同行评审的学术期刊。在此发表研究结果代表了科学界的一个重大里程碑，显示该研究已通过全球专家的严格审查。
EN： This is an inverted conditional structure (conditional inversion) used in formal or literary English. It replaces the standard conditional clause 'If it were not for...' by omitting 'if' and placing the auxiliary verb 'were' before the subject 'it'. It is used to express a hypothetical situation in the present or future that is contrary to fact.
中文： 这是一种用于正式或文学英语中的倒装条件句结构（条件倒装）。它省略了引导词「if」，并将助动词「were」置于主语「it」之前，用以取代标准的条件从句「If it were not for...」。此结构用于表示与现在或未来事实相反的假设情况。
Were it not for your timely assistance, we would not complete the project on schedule.
若非你及时相助，我们无法按时完成这个项目。
EN： The modal verb 'might' combined with the linking verb 'seem' is used to express a tentative or cautious possibility. It softens the statement, suggesting that while something appears to have a certain quality, it is open to interpretation or not definitively proven.
中文： 情态助动词「might」与连系动词「seem」结合，用于表达一种假设性或谨慎的推测。这种用法使语气显得委婉，暗示虽然某事似乎具有某种特质，但仍有诠释空间或尚未得到绝对证实。
Without further evidence, the theory might seem highly speculative to the scientific community.
在缺乏进一步证据的情况下，这项理论在科学界看来可能显得极具推测性。
EN： The adverb 'merely' is used to emphasize that something is only what is mentioned and nothing more, often carrying a dismissive or limiting tone. In this sentence, it minimizes the significance of 'whimsical' to contrast it with the actual 'broader significance'.
中文： 副词「merely」用于强调某事仅仅是所提到的情况，别无其他，通常带有轻描淡写或限制性的语气。在本句中，它淡化了「奇思妙想（whimsical）」的重要性，以与实际存在的「更广泛意义」形成对比。
The initial symptoms were merely a mild headache, but they soon worsened.
最初的症状仅仅是轻微头痛，但很快就恶化了。
EN： The present perfect tense ('have emphasised') is used here to describe a past action that has strong relevance to the present. In scientific and academic writing, it often introduces a prevailing consensus or ongoing state of research.
中文： 现在完成式（have emphasised）在此处用于描述一个过去发生但与现在有强烈关联的动作。在学术与科学写作中，这常用于引入目前普遍存在的共识或持续进行的研究状态。
Researchers have demonstrated that early intervention significantly improves outcomes.
研究人员已经证实，早期干预能显著改善预后。
EN： The noun clause introduced by 'that' acts as the direct object of the verb 'emphasised'. It contains a complete sentence structure ('different sugar varieties fuel... and even constitute...') that details the content of the emphasis.
中文： 由「that」引导的名词子句作为动词「emphasised」的直接受词。该子句包含一个完整的句子结构（different sugar varieties fuel... and even constitute...），详细说明了强调的内容。
She argued that the experimental data was inconclusive.
她主张实验数据是不具决定性的。
EN： The verb 'fuel' is used metaphorically here to mean 'to provide energy or support for a process'. It is paired with 'constitute' (to make up or form) using the coordinating conjunction 'and' to show parallel actions performed by 'different sugar varieties'.
中文： 动词「fuel」在此处作比喻性使用，意为「为某个过程提供能量或支持」。它与「constitute」（构成、组成）通过对等连接词「and」连接，以表示「different sugar varieties」所进行的平行动作。
The government's new policy is expected to fuel economic growth.
政府的新政策预计将刺激经济增长。
EN： The mention of DNA (Deoxyribonucleic acid) in relation to space chemistry highlights a major focus of astrobiology: understanding the prebiotic origins of life. In English-speaking scientific discourse, discussing 'the building blocks of life' (like sugars and amino acids found in space) is a common way to bridge complex chemistry with general public interest.
中文： 提到脱氧核糖核酸（DNA）与太空化学的关系，凸显了天体生物学的一个主要焦点：理解生命前期的起源。在英语科学论述中，讨论「生命的基石」（如在太空发现的糖类和氨基酸）是将复杂的化学与大众兴趣连结起来的常见方式。
EN： Gerund as Subject: The -ing form of a verb ('Understanding') can function as a noun and serve as the subject of a sentence. It takes a singular verb ('is').
中文： 动名词当主语：动词的 -ing 形式（如 'Understanding'）可以作为名词并担任句子的主语。其后须接单数动词（如 'is'）。
Developing new technologies requires significant financial investment.
开发新技术需要大量的资金投入。
EN： Embedded Question as Object of Gerund: The noun clause 'how these organic compounds form...' acts as the direct object of the gerund 'Understanding'. It follows statement word order (subject + verb) rather than question word order.
中文： 间接问句作动名词的宾语：名词从句 'how these organic compounds form...' 作为动名词 'Understanding' 的直接宾语。此从句须使用陈述句语序（主语 + 动词），而非疑问句语序。
Explaining why the experiment failed was difficult for the team.
向团队解释实验为何失败非常困难。
EN： Adjective + Preposition Collocation: 'Crucial to' is followed by a noun phrase or a gerund ('unravelling'). The 'to' here is a preposition, not part of an infinitive, which is a common source of error for learners.
中文： 形容词与介词的搭配：'Crucial to' 后面接名词短语或动名词（如 'unravelling'）。这里的 'to' 是介词，而非不定式符号，这是学习者常犯错的地方。
Continuous practice is crucial to mastering a foreign language.
持续的练习对于掌握一门外语至关重要。
EN： The emphatic phrase 'by no means' is used to strongly deny a statement or to emphasize that something is definitely not the case. It functions as an adverbial phrase and is more formal and emphatic than 'not at all' or 'definitely not'.
中文： 强调短语「by no means」用于强烈否定某个陈述，或强调某事绝非如此。它作为副词短语使用，比「not at all」或「definitely not」更为正式且具强调语气。
The challenging project is by no means complete, but we have made significant progress.
这项具有挑战性的专案绝非已经完成，但我们已经取得了重大进展。
EN： The noun 'instance' refers to a particular case or occurrence of something. When paired with 'of', it introduces the specific category or phenomenon being exemplified (e.g., 'instance of [noun/gerund]').
中文： 名词「instance」指某事的特定实例或发生。当与介词「of」连用时，用以引出所举例的具体类别或现象（例如：「instance of [名词/动名词]」）。
This is a rare instance of cooperation between the two rival companies.
这是这两家竞争对手之间合作的罕见案例。
EN： The use of 'molecular cousin' is a metaphorical extension. In scientific writing, 'cousin' is often used to describe a compound or molecule that has a similar chemical structure or relationship to another well-known substance.
中文： 「molecular cousin」（分子亲戚）是一种比喻性的延伸用法。在科学写作中，「cousin」常用来描述与另一种已知物质具有相似化学结构或亲缘关系的化合物或分子。
The researchers discovered a chemical cousin of aspirin in the bark of the local willow tree.
研究人员在当地柳树的树皮中发现了阿司匹林的化学亲戚。
EN： The prepositional phrase 'near the galactic centre' functions as an adverbial of place, modifying the verb 'spotted'. 'Galactic' is the adjectival form of 'galaxy'.
中文： 介词短语「near the galactic centre」（在银河系中心附近）作为地方副词短语，修饰动词「spotted」（发现）。「galactic」是「galaxy」（星系）的形容词形式。
Astronomers observed a massive black hole near the galactic centre.
天文学家在银河系中心附近观测到了一个超大质量黑洞。
EN： The term 'table sugar' refers to sucrose, the common sugar used in households. In scientific contexts, comparing complex interstellar molecules to everyday substances like 'table sugar' or 'raspberries' helps make advanced astrobiology more relatable and understandable to the general public.
中文： 「table sugar」指的是蔗糖，即日常生活中常见的食用糖。在科学科普文章中，将复杂的星际分子与「食用糖」或「覆盆子」等日常事物进行对比，有助于让深奥的太空生物学概念对大众而言更加通俗易懂。
EN： The relative pronoun 'that' introduces a defining relative clause modifying the noun phrase 'black grains'. In this clause, 'that' functions as the subject, followed by the verb 'yielded'. This structure is essential for specifying which grains are being referred to.
中文： 关系代词「that」引导一个限定修饰名词短语「black grains」（黑色颗粒）的关系从句。在此从句中，「that」充当主语，后接动词「yielded」。此结构对于明确指出所指的是哪些颗粒至关重要。
The team analyzed the soil samples that contained rare organic compounds.
该团队分析了含有稀有有机化合物的土壤样本。
EN： The preposition 'alongside' is used to mean 'together with' or 'in addition to'. It is often employed in formal or scientific contexts to describe co-occurrence or physical coexistence of multiple elements.
中文： 介词「alongside」用于表示「与…一起」或「除…之外（还）」。在正式或科学语境中，它常用于描述多个元素的共同出现或物理共存。
The rover discovered water ice alongside various mineral deposits on the planet's surface.
探测器在该行星表面发现了水冰以及各种矿物沉积物。
EN： The suffix '-like' is attached to a noun (here, 'gum') to form an adjective meaning 'resembling' or 'having the characteristics of'. It is a highly productive way to describe unfamiliar substances by comparing them to familiar ones.
中文： 词尾「-like」附加在名词（此处为「gum」，即黏胶）之后以形成形容词，意思是「像…的」或「具有…特征的」。这是一种非常实用的描述方式，藉由将不熟悉的物质与熟悉的物质进行对比来描绘。
The scientists observed a gel-like layer forming over the chemical mixture.
科学家们观察到化学混合物上方形成了一层凝胶状的薄层。
EN： This sentence refers to NASA's OSIRIS-REx mission, which successfully returned samples from the near-Earth asteroid Bennu in September 2023. The discovery of organic molecules like sugars and amino acids on asteroids supports the panspermia hypothesis—the idea that the chemical precursors to life on Earth may have been delivered by celestial impacts billions of years ago.
中文： 此句子提及美国国家航空航天局（NASA）的「欧西里斯-雷克斯」任务，该任务于 2023 年 9 月成功将近地小行星「贝努」的样本送回地球。在小行星上发现糖和氨基酸等有机分子，为「胚种论」（panspermia hypothesis）提供了支持，即地球生命的化学前驱物可能是数十亿年前透过天体撞击被带到地球的。
EN： The idiom 'lend credibility to' means to make an opinion, story, or theory seem more likely to be true. It is highly common in academic and formal registers.
中文： 短语「lend credibility to」意为「增加…的可信度」或「使…更具说服力」，常用于学术或正式文体中，用来表示某项新证据或论点支持了既有的假说或理论。
The newly discovered documents lend credibility to the historian's original theory.
新发现的文献为这位历史学家的最初理论增加了可信度。
EN： The modal perfect construction 'may have + past participle' is used to express a possibility about a past event where the speaker is not entirely certain.
中文： 情态助动词完成式「may have + 过去分词」用于对过去发生的事情进行推测，表示「过去可能已经…」，说话者对此并非百分之百确定。
The ancient civilization may have collapsed due to sudden climate change.
这个古老文明可能因为突然的气候变迁而崩溃。
EN： The reflexive pronoun 'themselves' is used here as the direct object of the verb 'sustained' because the subject of the noun clause ('the earliest forms of life') is the same as the object.
中文： 反身代词「themselves」在此处作为动词「sustained」的直接宾语，因为名词从句的主语（「最早期的生命形式」）与宾语为同一主体，表示「自我维持/生存」。
EN： The relative clause 'where erythrulose was found' is an adjective clause modifying the noun 'The region'. The relative adverb 'where' is used because it refers to a place and functions as an adverbial of place within the clause.
中文： 关系子句「where erythrulose was found」是形容词子句，用来修饰名词「The region」（区域）。这里使用关系副词「where」是因为它指代一个地点，并在该子句中充当地方副词的角色。
This is the laboratory where the breakthrough discovery was made.
这就是做出突破性发现的实验室。
EN： The present perfect passive voice ('has also been traversed') is used to describe an action that occurred at an unspecified time in the past, with a continuing relevance to the present. The passive voice shifts the focus to the receiver of the action ('The region').
中文： 现在完成式的被动语态（「has also been traversed」）用于描述在过去不特定时间发生、且与现在仍有持续关联的动作。被动语态将焦点转移到动作的承受者（「The region」）。
The ancient ruins have been visited by millions of tourists over the decades.
数十年来，这处古老遗迹已被数百万名游客造访过。
EN： The phrase ', the farthest spacecraft ever launched from Earth' is an appositive noun phrase that provides non-essential, descriptive information about 'NASA's twin Voyager probes'. The past participle 'launched' acts as an adjective modifying 'spacecraft'.
中文： 短语「, the farthest spacecraft ever launched from Earth」是一个同位语名词短语，针对「美国国家航空航天局的双子航海家探测器」提供非必要但具描述性的信息。过去分词「launched」在此作形容词修饰「spacecraft」。
We finally reached Mount Everest, the highest peak in the world.
我们终于抵达了珠穆朗玛峰，这座世界上最高的山峰。
EN： The 'Voyager' program refers to NASA's twin robotic probes, Voyager 1 and Voyager 2, launched in 1977. Voyager 1 became the first human-made object to enter interstellar space in 2012, followed by Voyager 2 in 2018. They carry the famous Golden Records, intended to communicate the story of our world to any extraterrestrial life.
中文： 「航海家」计划（Voyager program）是指美国国家航空航天局（NASA）于 1977 年发射的双子无人探测器——航海家 1 号和航海家 2 号。航海家 1 号于 2012 年成为首个进入星际空间的人造物体，随后航海家 2 号也于 2018 年进入。它们携带着著名的「航海家金唱片」，旨在向可能存在的地外生命传递地球的故事。
EN： The use of a 'that-clause' as a subject. A noun clause starting with 'That' can function as the subject of a sentence, representing a fact, idea, or situation. It is often used in formal or academic writing to introduce a complex proposition before stating its effect or impact.
中文： 「That 引导的主语从句」用法。由「That」开头的名词从句可以担任整句话的主语，用来表示一个事实、想法或情况。这在正式或学术写作中非常常见，便于在说明其影响或效果之前，先引入一个复杂的主张。
That the global temperature continues to rise concerns scientists worldwide.
全球气温持续上升这件事让全世界的科学家感到忧心。
EN： The use of 'should' in that-clauses to express surprise, indignation, or strong emotion (often referred to as the emotional 'should'). It does not indicate obligation here, but rather highlights the unexpected or remarkable nature of the situation.
中文： 在 that 从句中使用「should」来表达惊讶、愤慨或强烈的情感（通常称为情感助动词 should）。此处它并不表示义务或应该，而是用来强调该情况出乎意料或令人惊叹的本质（可译为「竟然」）。
It is surprising that he should say such a thing to his mentor.
他竟然对他的导师说出这样的话，真是令人惊讶。
EN： The structure 'strike someone as something'. This idiom means to give someone a particular impression or to be perceived by someone in a specific way. It is commonly followed by a noun phrase or an adjective phrase.
中文： 「strike someone as something」的结构。这个短语意为「给某人留下某种印象」或「让某人觉得……」。后面通常接名词短语或形容词短语。
His humble attitude struck the interviewers as highly professional.
他谦逊的态度给面试官留下了高度专业的印象。
EN： The sentence reflects a common philosophical sentiment in modern astrophysics: the juxtaposition of advanced scientific discovery with human humility. The realization that complex organic molecules (the building blocks of life) exist naturally in the harsh environment of deep space often evokes a sense of awe, bridging the gap between cold science and existential wonder.
中文： 这句话反映了现代天体物理学中常见的一种哲学情感：将先进的科学发现与人类的谦逊并置。当科学家意识到复杂有机分子（生命的基石）竟然自然存在于深空恶劣的环境中时，往往会激发出一种敬畏感，这在冰冷的科学与对生命存在的惊叹之间架起了一座桥梁。
EN： This sentence utilizes a conditional inversion (also known as a 'should-inversion') in the protasis (the 'if'-clause). In formal or academic English, 'if' can be omitted, and the auxiliary verb 'should' is inverted with the subject. This structure expresses a hypothetical future possibility (similar to a First Conditional but more tentative or formal).
中文： 本句在条件从句（if 子句）中使用了「倒装结构」（亦称为 should 倒装）。在正式或学术英语中，可以省略「if」，并将助动词「should」与主语对调。此结构用以表示对未来情况的假设，语气比一般的第一类条件句更为委婉、正式或不确定。
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EN： The phrase 'far-reaching' is a compound adjective meaning having important and widely applicable effects or implications. It is commonly paired with nouns like 'implications', 'consequences', 'effects', or 'reforms' to describe deep, long-lasting impact.
中文： 复合形容词「far-reaching」意为「影响深远的」或「波及广泛的」。它经常与「implications」（启示/影响）、「consequences」（后果）、「effects」（效果）或「reforms」（改革）等名词搭配，用以描述深远且持久的冲击。
The supreme court's decision will have far-reaching consequences for privacy rights.
最高法院的这项裁决将对隐私权产生深远的影响。
EN： The word 'indeed' is used as an intensifier at the end of the clause to emphasize the truth or strength of the statement 'would be far-reaching'. It adds a tone of conviction and academic weight to the conclusion.
中文： 副词「indeed」（确实/无疑）在此处用作子句末尾的强调词，用以加强「would be far-reaching」（将会影响深远）这一陈述的真实性与力度，为结论增添了坚定的语气与学术分量。
The results of the clinical trial are very promising indeed.
该临床试验的结果确实非常令人期待。
EN： The sentence reflects the cautious yet optimistic tone typical of peer-reviewed scientific journalism (such as in 'Nature Astronomy'). Rather than making definitive claims, scientists use conditional structures ('Should... would be...') to maintain empirical rigor while highlighting the profound philosophical and scientific excitement of finding organic precursors to life in deep space.
中文： 本句反映了同行评审科学新闻（如《自然天文学》）中典型的谨慎且乐观的语气。科学家不直接做出绝对的断言，而是使用条件假设结构（Should... would be...）来保持实证研究的严谨性，同时又突显了在深空发现生命有机前体在哲学与科学上的重大意义。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 恒星之间的，星际的
在本文中： 异想天开的、古怪而有趣的
在本文中： 构成，组成
在本文中： 先决条件，前提
在本文中： 收回，取回
在本文中： 假设，假说（复数形式）
在本文中： 横越，穿过
在本文中： 令人感到渺小或谦逊的
片语包含类型标示、双语定义、用法说明和例句。
The matter (gas and dust) that exists in the space between the star systems in a galaxy.
星际介质
To make an opinion, claim, or story seem more likely to be true or believable.
增加...的可信度，使...更具说服力
Used to say that someone or something is the only reason why something else did not happen or is not true.
若非因为...，如果没有...