EN： The preposition 'to' is used after 'welcome' to indicate the destination or place someone is being invited into. It functions as a directional marker.
中文： 介词 'to' 接在 'welcome' 之后，用来表示某人受邀进入的目的地或场所。它在这里起到了方向标记的作用。
Welcome to our new office in Taipei.
欢迎来到我们位于台北的新办公室。
EN： Noun phrases like 'chemistry lab' use a noun (chemistry) to modify another noun (lab), creating a specific compound noun that defines the type of room.
中文： 像 'chemistry lab' 这样的名词短语，是用一个名词 (chemistry) 来修饰另一个名词 (lab)，构成一个特定的复合名词，用以界定房间的类型。
She is waiting in the computer lab.
她正在计算机实验室里等候。
EN： In academic and professional settings, it is common to use a person's first name if a mentor-student relationship is established, but the student would typically address the professor by their title (e.g., 'Professor').
中文： 在學術與專業場合中，如果建立了導師與學生的關係，導師通常會直呼學生的名字，但學生通常會以職稱（如 'Professor'）來稱呼教授。
EN： The present simple tense of the 'be' verb (am) is used with an adjective (excited) to describe a current emotional state. The adverb 'really' is placed before the adjective to add emphasis.
中文： 使用 be 动词的一般现在时 (am) 搭配形容词 (excited) 来描述当前的心理状态。副词 'really' 置于形容词之前以加强语气。
I am really happy to meet you.
我真的很高兴见到你。
EN： The 'to + infinitive' structure (to be here) acts as an adverbial phrase explaining the reason for the emotion (excited).
中文： 不定式结构 (to + 动词原形) 在此作状语，用来解释产生该情绪 (excited) 的原因。
She was surprised to see him at the party.
在派对上看到他，她感到很惊喜。
EN： In academic settings, it is common and respectful to address a professor by their title ('Professor') rather than their first name, especially in a first meeting or formal lab environment.
中文： 在學術場合中，以職稱「Professor」（教授）來稱呼老師是常見且禮貌的做法，特別是在初次見面或正式的實驗室環境中，而非直呼其名。
EN： Present Perfect Tense (Experience): Used to talk about life experiences at an unspecified time in the past. It is formed with 'have/has' + past participle.
中文： 现在完成时（表经历）：用于讨论过去某个不确定时间点的个人经历。结构为“have/has + 过去分词”。
Have you ever traveled to Japan?
你曾经去日本旅游过吗？
EN： Gerund as Object of Preposition: After the preposition 'in', the noun phrase 'a lab' follows. If a verb were used, it would need to be in the -ing form.
中文： 介词后的宾语：在介词 'in' 之后接名词短语 'a lab'。若此处接动词，则需使用动名词（-ing）形式。
She is interested in learning chemistry.
她对学习化学感兴趣。
EN： In academic and professional settings, 'That is wonderful to hear' is a common polite way to encourage students or colleagues when they express enthusiasm.
中文： 在學術和專業場合中，「That is wonderful to hear」是一種常見且禮貌的方式，用來鼓勵表達熱忱的學生或同事。
EN： Present Perfect Tense (have + past participle): Used here to describe a life experience that occurred at an unspecified time in the past up to the present.
中文： 现在完成时 (have + 过去分词)：这里用于描述从过去到现在为止，某个未明确说明具体时间点的个人经历。
I have visited Tokyo three times.
我已经去过东京三次了。
EN： Adverb 'Only': Used to emphasize that something is limited to a specific place, person, or thing.
中文： 副词 'Only' (只有/仅仅)：用于强调某事仅限于特定的地点、人物或事物。
He only eats vegetables.
他只吃蔬菜。
EN： In modern education, many students use YouTube as a primary learning resource. Mentioning this reflects a common contemporary reality where digital content precedes hands-on experience.
中文： 在現代教育中，許多學生將 YouTube 作為主要的學習資源。提到這一點反映了當代的普遍現實：在進行實際動手操作之前，通常已經先接觸過數位內容。
EN： The phrase 'be different from' is a common adjective pattern used to compare two things that are not the same. It is often followed by a noun or a gerund.
中文： 短语 “be different from” 是一个常见的形容词搭配，用于比较两个不同的事物。后面通常接名词或动名词。
The climate in Taiwan is quite different from that in England.
台湾的气候与英国的气候截然不同。
EN： The expression 'something comes first' is an idiom used to emphasize that a particular thing is the most important priority in a given situation.
中文： 表达方式 “something comes first” 是一个习惯用语，用来强调在特定情况下，某件事是最高优先事项或最重要的。
When you are driving, safety should always come first.
开车时，安全永远应该放在第一位。
EN： In Western academic and professional laboratory settings, 'Safety First' is not just a slogan but a strict legal and ethical requirement. Before any practical work begins, a safety briefing is mandatory.
中文： 在西方學術和專業實驗室環境中，「安全第一」不僅僅是一個口號，而是一項嚴格的法律和倫理要求。在任何實際操作開始之前，進行安全簡報是強制性的。
EN： The semi-modal verb 'need to' is used to express necessity or obligation. In questions, it follows the standard 'Do/Does + subject + need to + base verb' structure.
中文： 半情态动词 'need to' 用于表达必要性或义务。在疑问句中，它遵循标准的“Do/Does + 主语 + need to + 动词原形”结构。
What do I need to bring for the hike?
我去远足需要带什么？
EN： The conjunction 'before' introduces a subordinate clause of time. In this context, it uses the simple present tense ('we start') to refer to a future action.
中文： 连词 'before' 引导时间状语从句。在此语境下，它用一般现在时（'we start'）来表示将来的动作。
Please wash your hands before you eat.
吃饭前请洗手。
EN： In academic or professional settings, asking 'What do I need to do before we start?' demonstrates proactivity and a respect for safety protocols, which is highly valued in laboratory environments.
中文： 在學術或專業環境中，詢問「在我們開始之前我需要做什麼？」展現了主動性以及對安全規範的尊重，這在實驗室環境中非常受重視。
EN： The modal verb 'must' is used to express strong obligation or necessity. It is followed by the base form of the verb (in this case, 'put on').
中文： 情态动词 'must' 用于表达强烈的义务或必要性。其后接动词原形（在本句中为 'put on'）。
You must follow the rules in the library.
你必须遵守图书馆的规定。
EN： The phrasal verb 'put on' means to place a garment or accessory on one's body. It is a separable phrasal verb, though here the object follows the particle.
中文： 短语动词 'put on' 意为穿上或戴上衣物或配件。这是一个可拆分的短语动词，但在本句中宾语接在介词之后。
Please put on your jacket before going outside.
出门前请穿上你的外套。
EN： In Western academic and professional laboratory settings, 'Safety First' is a strict protocol. Wearing Personal Protective Equipment (PPE) like goggles and lab coats is often a legal requirement before any practical work begins.
中文： 在西方的學術與專業實驗室環境中，「安全第一」是嚴格的準則。在開始任何實際操作前，穿戴個人防護裝備（PPE），如護目鏡和實驗衣，通常是法律規定的必要程序。
EN： The modal verb 'should' is used to ask for advice or to check if an action is necessary or correct. In questions, the word order is 'Should + subject + base verb'.
中文： 情态动词 'should' 用于征询建议或确认某项行动是否必要或正确。在疑问句中，语序为“Should + 主语 + 动词原形”。
Should I bring an umbrella today?
我今天应该带伞吗？
EN： The word 'them' is an object pronoun used to refer back to a plural noun mentioned previously (in this context, the safety goggles and lab coat).
中文： 单词 'them' 是人称代词宾格，用于指代前面提到过的复数名词（在此语境中指护目镜和实验服）。
I bought some apples and put them in the fridge.
我买了一些苹果，把它们放进了冰箱。
EN： In a laboratory setting, safety protocols are strictly followed. Asking 'Should I...' demonstrates a responsible attitude toward safety and respect for the supervisor's expertise.
中文： 在實驗室環境中，安全規範被嚴格執行。使用「Should I...」詢問展現了對安全的負責態度，以及對指導者專業知識的尊重。
EN： Passive Voice (be + past participle): Used when the action is more important than the person performing it. Here, 'are required' emphasizes the rule/necessity.
中文： 被动语态 (be + 过去分词)：用于强调动作本身而非执行者。在此处 "are required" 强调了规则或必要性。
Helmets are required for all cyclists.
所有骑自行车的人都必须佩戴头盔。
EN： Subordinating Conjunction 'because': Used to introduce a clause that provides a reason or explanation for the preceding statement.
中文： 从属连词 'because'：用于引导原因状语从句，为前面的陈述提供原因或解释。
I stayed home because it was raining.
因为下雨，所以我呆在家里。
EN： In professional and educational lab settings in English-speaking countries, safety protocols are strictly enforced. The use of 'required' instead of 'should' emphasizes that this is a mandatory safety rule, not a suggestion.
中文： 在英語國家的專業和教學實驗室環境中，安全協議執行非常嚴格。使用 'required' (必須) 而非 'should' (應該) 強調了這是一項強制性的安全規定，而非建議。
EN： The causative verb 'let' is used to allow or permit someone to do something. It is followed by an object and the base form of a verb (bare infinitive).
中文： 使役动词 'let' 用于允许或让某人做某事。其后接宾语，再接不带 to 的不定式（动词原形）。
Let me help you with those heavy bags.
让我帮你提那些沉重的袋子吧。
EN： Indirect questions function as noun clauses. When a question like 'How does temperature affect dissolving?' is embedded within a sentence, the word order changes to subject + verb (temperature affects).
中文： 间接疑问句充当宾语从句。当像“温度如何影响溶解？”这样的疑问句嵌入句中时，语序会变为陈述语序“主语 + 谓语”（temperature affects）。
I don't know where he lives.
我不知道他住在哪儿。
EN： In academic and scientific settings, 'let me' is a polite way for a person in authority (like a professor) to transition to a new topic or instruction while maintaining a collaborative tone.
中文： 在學術和科學環境中，「let me」是權威人士（如教授）切換到新話題或指令的一種禮貌方式，同時保持合作的語氣。
EN： Linking Verbs (Sense Verbs): Verbs like 'sound', 'look', or 'feel' are followed by adjectives to describe the subject. They do not take an adverb in this context.
中文： 系动词（感官动词）：像 'sound'（听起来）、'look'（看起来）或 'feel'（感觉起来）这类的动词，后面接形容词来修饰主语，而非副词。
The music sounds beautiful.
这音乐听起来很美。
EN： Wh- Questions with 'Be' Verb: To ask for information, place the question word (What) at the beginning, followed by the 'be' verb and then the subject.
中文： Wh- 特殊疑问句与 Be 动词：为了询问信息，将疑问词（What）放在句首，接着是 be 动词，最后是主语。
What is your plan?
你的计划是什么？
EN： In academic and scientific settings, using words like 'hypothesis' shows a professional approach to learning. It is common for students to use 'So' to transition from a comment to a specific question.
中文： 在學術與科學情境中，使用 'hypothesis'（假設）等詞彙展現了專業的學習態度。學生常用 'So' 作為開頭，從給予評論轉向提出具體問題，這在課堂互動中非常常見。
EN： The sentence uses a 'Noun Clause' starting with 'that' as a subject complement. This clause functions as a noun to explain what the 'hypothesis' is.
中文： 本句使用了由“that”引导的“名词性从句”作主语补足语。该从句的功能相当于名词，用来解释“假设 (hypothesis)”的具体内容。
My belief is that practice makes perfect.
我的信念是熟能生巧。
EN： The Present Simple tense is used here to state a scientific fact or a general truth (sugar dissolving in water).
中文： 这里使用“一般现在时”来陈述科学事实或客观真理（糖在水中溶解）。
Water boils at 100 degrees Celsius.
水在摄氏100度时沸腾。
EN： In academic and professional settings, 'Good question' is a common polite filler used by teachers or presenters to acknowledge a student's engagement before providing an answer.
中文： 在學術或專業場合中，「Good question」是老師或演講者常用的禮貌性墊場話，用來在回答之前肯定學生的參與和思考。
EN： The adverb 'actually' is used to emphasize a fact or to correct a misconception. In this context, it adds a layer of confirmation to the speaker's prior knowledge.
中文： 副词 “actually” 用于强调事实或纠正误解。在此语境中，它为说话人先前的认知增添了一层确认感。
I actually finished the report two days ago.
我实际上在两天前就完成报告了。
EN： The future simple tense (will + base verb) is used here to make a prediction based on personal opinion or belief.
中文： 一般将来时（will + 动词原形）在此处用于根据个人观点或信念做出预测。
I think it will rain tomorrow.
我认为明天会下雨。
EN： In academic and scientific discussions, using 'actually' can signal that the speaker has done prior research or has background knowledge, which builds credibility even in a student-teacher dialogue.
中文： 在學術和科學討論中，使用「actually」可以顯示說話者曾做過事先研究或具備背景知識，這在師生對話中能建立可信度。
EN： The modal verb 'shall' is used with first-person pronouns (I/We) to express a future intention or determination. In modern English, it often sounds more formal or certain than 'will'.
中文： 助动词 'shall' 与第一人称代词（I/We）连用，用来表达未来的意图或决心。在现代英语中，它通常比 'will' 听起来更正式或更具确定性。
We shall overcome this challenge together.
我们将共同克服这项挑战。
EN： The preposition 'before' can be followed by a gerund (V-ing) when the subject of the main clause and the prepositional phrase is the same. This shortens the sentence from 'before he/she decides'.
中文： 当主句与介词短语的主语相同时，介词 'before' 后面可以接动名词（V-ing）。这能将句子从 'before he/she decides' 进行简化。
Always wash your hands before eating.
吃饭前务必洗手。
EN： The phrase 'We shall see' is a common idiomatic expression used to withhold judgment until more information is available. It reflects the scientific principle of empiricism—relying on observation rather than assumptions.
中文： 短語 'We shall see' 是一個常見的習語，用於在獲得更多資訊之前保留判斷。這反映了科學的經驗主義原則——依賴觀察而非假設。
EN： The phrase 'Here is/are' is used to introduce or point out something that is physically present or being presented at the moment. Even though 'equipment' is the subject, the sentence starts with 'Here' for emphasis.
中文： 句型 “Here is/are” 用于引出或指出眼前正在呈现的事物。虽然 “equipment” 是主语，但为了强调而将 “Here” 置于句首。
Here is the book you were looking for.
这就是你一直在找的那本书。
EN： The colon (:) is used to introduce a list that clarifies or specifies the noun mentioned before it (in this case, 'equipment').
中文： 冒号 (:) 用于引出清单，对前面提到的名词（在此句中为 “equipment” 仪器/设备）进行具体说明。
I need three things from the store: milk, eggs, and bread.
我需要从商店买三样东西：牛奶、鸡蛋和面包。
EN： In a laboratory setting, 'equipment' is an uncountable noun in English, meaning we don't say 'equipments'. We use specific names like 'beakers' or 'thermometers' to count individual items.
中文： 在實驗室環境中，'equipment'（設備）在英文中是不可數名詞，因此不使用複數形 'equipments'。若要計算個別物品，我們會使用具體的名稱，如 'beakers'（燒杯）或 'thermometers'（溫度計）。
EN： The correlative pair 'one... and the other...' is used to refer to two specific items or people. 'One' identifies the first item, and 'the other' identifies the remaining one in a set of two.
中文： 关联短语 “one... and the other...” 用于指代两个特定的物品或人。“One” 表示第一个，而 “the other” 则表示两者中剩下的那一个。
I have two pens; one is blue and the other is red.
我有两支笔；一支是蓝色的，另一支是红色的。
EN： The phrase 'I see' is a common idiomatic expression used to indicate that the speaker understands a situation or a piece of information.
中文： 短语 “I see” 是一个常见的习惯用语，用来表示说话者理解了某种情况或某条信息。
Oh, I see why you are late now.
哦，我明白你为什么迟到了。
EN： In a scientific context, clarity and observation are key. Using 'I see' followed by a summary of what is observed is a standard way to confirm understanding of an experimental setup.
中文： 在科學情境中，清晰度與觀察是關鍵。使用「I see」後接觀察到的現象摘要，是確認理解實驗設置的標準方式。
EN： Imperative Mood: The sentence starts with the base form of the verb 'add' to give an instruction or command. In English, the subject 'you' is understood and omitted in imperative sentences.
中文： 祈使句：句子以动词原形 “add” 开头，用于下达指令或命令。在英语中，祈使句的主语 “you” 通常会被省略。
Mix the ingredients thoroughly before baking.
烘培前将原料充分混合。
EN： Prepositional Phrase 'at the same time': This is a common idiomatic expression used as an adverbial phrase to indicate that two or more actions happen simultaneously.
中文： 介词短语 “at the same time”：这是一个常见的习惯用语，用作副词短语，表示两个或多个动作同时发生。
They both started laughing at the same time.
他们两个人同时笑了起来。
EN： In a laboratory setting, instructions are often given using the imperative mood to ensure clarity and safety. Precision (e.g., 'one spoon', 'at the same time') is crucial in scientific communication.
中文： 在實驗室環境中，指令通常使用祈使句給出，以確保清晰與安全。在科學溝通中，精確性（例如「一匙」、「同時」）至關重要。
EN： Present Continuous Tense: Used here to describe an action or process happening at the moment of speaking (is dissolving).
中文： 现在进行时：在此用于描述说话当下正在发生的动作或过程（is dissolving）。
The ice is melting quickly under the sun.
冰块在阳光下正在快速融化。
EN： Comparative Adverbs with 'Much': The word 'much' is used as an intensifier before a comparative adverb (faster) to show a significant difference.
中文： 比较级副词与 Much 的修饰：单词 'much' 用作比较级副词 (faster) 前的修饰语，用以表示显著的差异。
He runs much faster than I do.
他跑得比我快得多。
EN： In a laboratory setting, 'Done!' is a common informal way to signal the completion of a step or the start of an observation. It reflects the hands-on, active nature of scientific experiments.
中文： 在實驗室環境中，「Done!」是一種常見的非正式表達方式，用來表示完成了一個步驟或開始進行觀察。這反映了科學實驗動手實作、積極參與的本質。
EN： The relative clause starting with 'when' functions as an adjective clause to modify the noun 'time', specifying which particular time is being referred to.
中文： 以 'when' 引导的关系从句作定语从句，用来修饰名词 'time'（时间），明确指出是指哪一个特定的时间点。
I remember the day when we first met.
我记得我们第一次见面的那天。
EN： The imperative mood is used to give instructions or requests. It typically starts with a base verb (like 'write') and often includes 'please' for politeness.
中文： 祈使句用于表达指令或请求。通常以动词原形（如 'write'）开头，并常加上 'please' 以示礼貌。
Please turn off the lights before you leave.
请在离开前关灯。
EN： In academic and scientific settings, professors often use positive reinforcement like 'Excellent observation' to encourage students' critical thinking and engagement.
中文： 在學術和科學環境中，教授經常使用如 'Excellent observation'（出色的觀察）之類的正面鼓勵，以激發學生的批判性思考和參與感。
EN： The use of 'one' as a pronoun to avoid repeating a previously mentioned noun (in this case, 'sample'). It makes the sentence more concise and natural.
中文： 使用代词 “one” 可以避免重复前面提到的名词（在此句中指 “sample”）。这能使句子更加简洁自然。
I have two pens; the blue one is my favorite.
我有两支笔；蓝色的那支是我最喜欢的。
EN： The verb 'take' is used to express the amount of time required to complete an action or process.
中文： 动词 “take” 用于表达完成某个动作或过程所需的时间。
The flight to Tokyo takes four hours.
飞往东京的航班需要四个小时。
EN： The modal verb 'can' is used here to express ability or possibility. In a question format, the modal verb is placed before the subject (Subject-Auxiliary Inversion).
中文： 情态动词 “can” 在此处用于表达能力或可能性。在疑问句中，情态动词会置于主语之前（主谓倒装）。
What can we learn from this experience?
我们可以从这次经历中学到什么？
EN： The preposition 'from' indicates the source or basis of a conclusion or information.
中文： 介词 “from” 在此处表示结论或信息的来源或依据。
I can tell from your face that you are happy.
我从你的神情就能看出你很高兴。
EN： In academic and scientific contexts, professors often use open-ended questions like this to encourage students to practice critical thinking rather than just giving them the answer.
中文： 在學術和科學背景下，教授經常使用這類開放式問題，以鼓勵學生練習批判性思考，而不是直接給予答案。
EN： The sentence uses a 'Noun Clause' starting with 'that' as the direct object of the verb 'shows'. This structure allows you to state a fact or a finding as a complete thought within another sentence.
中文： 本句使用了由 'that' 引导的“宾语从句”作为动词 'shows' 的直接宾语。这种结构便于在一个句子中陈述一个完整的事实或发现。
The study shows that sleep is important for health.
研究显示睡眠对健康很重要。
EN： The Present Simple tense is used here to express a scientific fact or a general truth (e.g., 'hot water dissolves sugar faster').
中文： 这里使用“一般现在时”来表达科学事实或客观真理（例如：热水溶解糖的速度更快）。
The sun rises in the east.
太阳从东边升起。
EN： In academic and scientific contexts, using structured language like 'The result shows that...' and 'Our hypothesis was...' is standard practice for reporting findings objectively.
中文： 在學術和科學語境中，使用如 'The result shows that...' (結果顯示...) 和 'Our hypothesis was...' (我們的假設是...) 這種結構化的語言是客觀報告研究結果的標準做法。
EN： The Present Perfect Tense (have + past participle) is used here to describe an action that has just been completed, emphasizing the result in the present.
中文： 现在完成时（have + 过去分词）在此用于描述刚刚完成的动作，强调该动作对现在造成的结果或成就。
I have finished my homework already.
我已经写完作业了。
EN： Adverbs of Manner (successfully) are often placed at the end of a sentence or after the direct object to describe how an action was performed.
中文： 方式副词（successfully）通常放在句末或直接宾语之后，用来修饰动作进行的方式。
She passed the driving test successfully.
她成功通过了驾考。
EN： In academic and professional settings, 'Well done' is a common and encouraging way to provide positive feedback. It acknowledges both the effort and the successful outcome.
中文： 在學術與專業場合中，「Well done」是一種常見且具鼓勵性的正面回饋方式。它同時肯定了對方的努力以及成功的結果。
EN： The structure 'much more than' is used to emphasize a comparative difference. 'Much' acts as an intensifier for the comparative adjective or adverb.
中文： 结构 'much more than' 用于强调比较级的差异。'Much' 在此作为程度副词，修饰后面的比较级形容词或副词，表示“得多”、“远远超过”。
This new laptop is much more expensive than my old one.
这台新笔记本电脑比我旧的那台贵得多。
EN： Gerunds (verb + -ing) can function as the object of a preposition. In this sentence, 'watching' is a gerund following the preposition 'than'.
中文： 动名词（verb + -ing）可以作介词的宾语。在本句中，'watching' 是跟在介词 'than' 后面的动名词。
She is better at drawing than singing.
比起唱歌，她更擅长绘画。
EN： In academic settings, it is standard to address a professor by their title ('Professor') to show respect, rather than using their first name, especially in a formal lab environment.
中文： 在學術場合中，通常會以職稱（如 Professor）來稱呼教授以示尊重，而非直呼其名，尤其是在正式的實驗室環境中。
EN： The structure 'Subject + be + adjective + to-infinitive' is used to express feelings or reactions to a specific action or piece of information.
中文： 结构“主语 + be动词 + 形容词 + 不定式 (to V)”用于表达对特定行为或信息的感受或反应。
She was surprised to see him at the party.
她很惊讶在派对上见到他。
EN： The future tense 'will + base verb' is used here to express a plan or a promise made by the speaker for a future time (next week).
中文： 一般将来时“will + 动词原形”在此用于表达说话人对将来（下周）所做的计划或承诺。
We will visit the museum tomorrow morning.
我们明天早上将参观博物馆。
EN： In academic settings, professors often use encouraging phrases like 'I am glad to hear that' to build rapport and motivate students. The transition to 'your own experiment' signifies a shift from guided learning to independent inquiry, which is a key value in Western science education.
中文： 在學術環境中，教授經常使用如「I am glad to hear that」之類的鼓勵性語句來建立良好關係並激勵學生。轉向「你自己的實驗」象徵著從引導式學習轉向獨立探究，這是西方科學教育中的核心價值。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 化学，研究物质组成、性质及其变化规律的科学。
在本文中： 实验，为了检验某种理论或假设而进行的操作过程。
在本文中： 护目镜，用于保护眼睛免受化学品或异物伤害的眼镜。
在本文中： 化学制品或化学物质。
在本文中： 溶解，固体物质在液体中分解并均匀分布的过程。
在本文中： 假设，根据已知事实提出的待验证的推论。
在本文中： 设备、器材，指进行特定活动所需的成套工具。
在本文中： 烧杯，实验室中常用的圆柱形玻璃容器。
在本文中： 观察，指仔细察看事物以获取信息的行为。
在本文中： 推断、得出结论，根据事实或证据做出判断。
片语包含类型标示、双语定义、用法说明和例句。
Safety is the most important thing to consider in a situation.
安全第一
To place a piece of clothing or equipment on one's body.
穿上、戴上
Simultaneously; happening or being done together.
同时
To record information on paper.
写下、记录
To provide evidence that suggests a theory or hypothesis is correct.
支持（假说）
A specific portion of a substance or material that is being studied or tested.
样本 / 试样
To plan the specific procedures, variables, and controls of a scientific study.
设计（实验）