EN： The complex causative construction 'leave + object + adjective phrase' denotes causing someone or something to remain in a particular state or condition, often an undesirable one. 'Short of' functions here as a predicate adjective phrase meaning 'lacking' or 'deficient in'.
中文： 「leave + 受詞 + 形容詞片語」為進階使役結構，表示「使某人／某事處於某種（通常為負面或不良的）狀態」。在此結構中，「short of」作受詞補語，意指「缺乏……」或「不足……」。
The unexpected cancellation of the flights left hundreds of passengers stranded at the airport.
航班的無預警取消使數百名旅客滯留在機場。
EN： The absolute construction 'with + noun phrase + past participle / adjective' introduces accompanying circumstances or supplementary details, functioning adverbially to modify the main clause.
中文： 「with + 名詞片語 + 過去分詞／形容詞」為常見的獨立分詞結構（伴隨狀語），用以補充說明主句動作發生時的伴隨狀況、背景細節或進一步說明受影響的群體。
The company announced massive budget cuts, with newly hired employees most affected.
該公司宣布大幅削減預算，其中新進員工受到的影響最大。
EN： Journalistic reporting inversion / end-weight structure: In news discourse, reported speech frequently places the reported clause first as the primary thematic focus, trailing with the reporting attribution clause ('researchers have warned') to emphasize the substantive finding over the attribution source.
中文： 新聞報導中的引述結構倒裝：在新聞體裁中，通常將引述的具體內容置於句首作為主要信息焦點（thematic focus），而將報導引導句（如 'researchers have warned'）置於句末，以符合末端加重原則並強化新聞核心事實。
Rising sea levels could threaten coastal cities sooner than expected, climate scientists have cautioned.
氣候科學家警告，海平面上升威脅沿海城市的速度可能比預期更快。
EN： In the UK and other Western nations, the surge in veganism and plant-based diets has created a public health dilemma: while environmentally beneficial, unfortified dairy alternatives can lead to micronutrient deficiencies—particularly iodine and vitamin B12—which traditional dairy milk provided naturally and abundantly.
中文： 在英國及歐美許多國家，純素與植物性飲食熱潮日益盛行，但同時也引發了公共衛生層面的關注：未添加強化營養劑的植物奶替代品可能導致人體缺乏碘（iodine）與維生素 B12。傳統乳製品一向是西方飲食中碘與鈣質最穩定的主要來源，因此若消費者未留意替代品的強化成分，容易造成微量營養素失衡。
EN： The conjunction 'unless' introduces a conditional subordinate clause meaning 'except if' or 'if... not'. It takes a present tense verb form (here in the passive voice 'are fortified') to refer to a general or future condition, while the main clause expresses a potential consequence using modal verbs like 'may'.
中文： 從屬連接詞「unless」意為「除非……否則……」或「若非（if... not）」，用來引導條件子句。在此句中，條件子句使用現在式被動語態（are fortified）表示通用或未來的前提條件；主要子句則搭配情態助動詞「may」來表達潛在的後果。
Unless policies are properly enforced, minor violations may lead to widespread non-compliance.
除非政策得到妥善執行，否則微小的違規行為可能會引發普遍的不遵從現象。
EN： The past participle phrase 'made from soya, almonds or oats' functions as a post-modifying reduced relative clause modifying the noun 'substitutes' (short for 'which/that are made from...'). 'Made from' is used when the original materials undergo a transformation to produce the final item.
中文： 過去分詞片語「made from soya, almonds or oats」作為後位修飾語，修飾前面的名詞「substitutes」，為簡化自關係子句「which are made from...」的結構。當原始原料經由物理或化學加工轉換為成品時，慣用介系詞「made from」。
Packaging made from recycled materials has a significantly lower carbon footprint.
由回收材料製成的包裝其碳足跡明顯更低。
EN： The adverb 'even' is placed before the noun phrase 'partial replacement' to emphasize an extreme or unexpected case, underscoring that not only full substitution, but even a slight or partial switch is sufficient to cause a drop in nutrient intake.
中文： 副詞「even（甚至、即使）」置於名詞片語「partial replacement」之前，用以強調極端或出乎意料的情況，凸顯出無須完全取代，僅僅是「部分替代」就足以導致營養素攝取量下滑。
Even modest increases in daily physical activity can substantially reduce health risks.
即使只是稍微增加日常身體活動量，也能大幅降低健康風險。
EN： In the UK and EU, dairy alternatives are increasingly popular due to climate and ethical concerns. However, unlike cow's milk—which is naturally rich in iodine and calcium, partly due to feed supplements and disinfectants used in milking—plant milks are not universally required by law to be fortified. This creates an ongoing public health debate about whether consumers, especially young women, are aware that plant milks are not nutritionally equivalent unless actively fortified.
中文： 在英國與歐盟地區，基於氣候變遷與動物福利考量，植物奶市場成長迅速。然而，傳統牛奶天然富含碘與鈣（部分源於飼料添加劑與擠乳清潔劑），但法規並未強制規定所有植物性替代奶都必須添加這些微量元素。這引發了公共衛生學界的擔憂：消費者（特別是年輕女性）若誤以為植物奶與天然乳製品具有完全相同的營養價值，可能會在不知不覺中面臨營養素攝取不足的風險。
EN： Locative / Prepositional Phrase Inversion: The sentence opens with the prepositional complement 'Of greatest concern' acting as a fronted predicate, followed immediately by the linking verb 'is', and then the logical subject 'iodine'. This structure is used in formal writing to emphasize the degree of importance and create a smooth transition from previous context.
中文： 介系詞片語倒裝（倒裝結構）：本句以介系詞補語「Of greatest concern」作為前置述語開頭，緊接著連繫動詞「is」，最後才是真正的邏輯主詞「iodine」。此結構常見於正式與新聞文體，用以凸顯嚴重性或重要性，並建立緊密的前後文銜接。
Of particular significance was the discovery of deep-sea hydrothermal vents.
特別具有重大意義的是深海熱泉的發現。
EN： Appositive with a Contact Relative Clause: 'a trace element' stands in apposition to 'iodine', elaborating on its nature. It is immediately modified by a reduced relative clause (contact clause) omitting the relative pronoun: '[which/that] the thyroid relies on to produce hormones...'. Notice the preposition 'on' remains stranded at the clause boundary.
中文： 同位語與省略關係代名詞的關係子句：「a trace element」作為「iodine」的同位語，用以解釋其本質。後方緊接省略關係代名詞（which/that）的接觸子句（contact clause）「the thyroid relies on...」作後位修飾，且介系詞「on」保留於子句末端。
Iron is an essential mineral the body needs to transport oxygen.
鐵是人體輸送氧氣所必需的一種重要礦物質。
EN： Present Participle as Post-Nominal Modifier: 'governing metabolism, growth and brain development' uses the active participle 'governing' (equivalent to 'which govern') to modify the preceding noun 'hormones', succinctly expressing their function.
中文： 現在分詞作後位修飾：現在分詞片語「governing metabolism, growth and brain development」（相當於「which govern...」）直接置於名詞「hormones」之後，簡潔有力地說明該荷爾蒙所發揮的主動調節功能。
The company introduced policies governing remote work and employee privacy.
該公司推出了規範遠端工作及員工隱私的政策。
EN： In Western public health, cow's milk has historically been one of the primary dietary vehicles for iodine, partly due to sanitizing agents used in milking machinery and fortified cattle feed. As consumers increasingly shift toward plant-based alternatives (oat, almond, soy milk) for ethical and environmental reasons, nutritionists frequently raise alarms because plant-based milks are not uniformly fortified with iodine, creating a latent micronutrient gap.
中文： 在西方公共衛生體系中，牛奶歷來是大眾攝取碘的主要來源之一（部分來自畜牧業含碘消毒劑與強化飼料）。近年來，因環保或動物福利理念，燕麥奶、杏仁奶等植物奶風靡歐美，然而許多植物奶並未添加碘，使營養學界憂慮純素風潮可能導致新一代年輕族群與女性面臨隱性碘缺乏風險。
EN： A gerund phrase ('replacing a fifth to a third of dairy') functions syntactically as the subject of the main clause. Gerund phrases take singular agreement when used as subjects and allow complex noun phrases and modifiers to be packed efficiently into an action-oriented subject.
中文： 動名詞片語（replacing a fifth to a third of dairy）在此句中作為主要子句的主詞。動名詞片語當主詞時視為單數，能夠簡潔且高效率地將動作概念與其受詞、修飾語整合為句子的核心主體。
Consuming excessive amounts of processed sugar can lead to chronic inflammation.
攝取過量的加工糖可能會導致慢性發炎。
EN： The modal auxiliary 'would' expresses hypothetical consequence or projection derived from predictive modeling or research data, rather than expressing past habitual action or conditional politeness.
中文： 助動詞「would」在此並非表示過去習慣或客氣語氣，而是用於表達根據科學模型或數據推算出的「假設性後果」或「預測結果」。
Implementing this carbon tax would reduce national emissions by 15 percent over five years.
開徵這項碳稅將會在五年內使全國碳排放量減少百分之 15。
EN： The correlative prepositional structure 'from X to Y' is paired with the transitive verb 'raise' (raise [object] from X to Y) to indicate a quantitative shift along a scale, clearly delineating the baseline and projected outcome.
中文： 介系詞結構「from X to Y」（從 X 到 Y）與及物動詞「raise」（提高）搭配使用，構成「raise [受詞] from X to Y」句型，用來標示數值在度量尺度上的變化，明確區分基準數值與預測後的數值。
The central bank decided to raise interest rates from 3.5 to 4.0 percent.
中央銀行決定將利率從百分之 3.5 調升至百分之 4.0。
EN： In the UK and Europe, cows' milk is historically one of the primary dietary sources of iodine due to iodized cattle feed and sanitizing agents used in milking machinery. Unlike table salt in the US and many Asian countries, UK table salt is rarely iodized by default. Consequently, a shift toward non-fortified plant-based milks poses a unique public health risk in Western European countries.
中文： 在英國與歐洲大部分地區，由於牛飼料添加碘以及擠乳設備的消毒程序，牛奶歷來是大眾最主要的碘攝取來源。與美國或亞洲許多國家普遍採用加碘食鹽（碘鹽）不同，英國市售食鹽多半未強制加碘。因此，當民眾轉向未額外添加碘的植物奶時，便引發了西歐公共衛生界的高度擔憂。
EN： The modal auxiliary verb 'would' is used here to express hypothetical or projected outcomes derived from mathematical or scientific modelling, rather than an absolute factual statement.
中文： 助動詞「would」在此用於表達基於科學或統計模型推算出的「假設性或預測性結果」，而非既定的既成事實，展現學術與新聞報導中的客觀審慎態度。
Under the proposed tax reforms, average household savings would increase by 5 percent.
在擬議的稅制改革下，家庭平均儲蓄預計將增加 5%。
EN： The participle phrase 'aged 19 to 49' serves as a reduced relative clause (short for 'who are aged 19 to 49') post-modifying the noun 'women'.
中文： 分詞片語「aged 19 to 49」為簡化關係子句（源自「who are aged 19 to 49」），作為後置修飾語修飾名詞「women」，使句構更加緊湊精煉。
The survey focused on young professionals aged 25 to 35 residing in metropolitan areas.
該項調查主要針對居住在都會區、年齡介於 25 至 35 歲的年輕專業人士。
EN： The prepositional participle phrase 'based on...' functions as an adverbial modifier indicating the evidence, premise, or assumption underpinning the main clause.
中文： 分詞片語「based on...」作狀語（副詞修飾語），置於句尾用來說明主要子句推論所依據的前提、依據或假設條件。
The economic forecast was revised downward, based on weaker consumer spending in the final quarter.
根據最後一季疲軟的消費者支出，經濟預測向下修正。
EN： In public health contexts, 'women aged 19 to 49' typically denotes women of childbearing (reproductive) age. Iodine intake is especially scrutinized in this demographic because maternal deficiency can lead to severe neurodevelopmental deficits in offspring. In Western countries (such as the UK), cow's milk has historically been the primary incidental source of dietary iodine; the rapid market shift toward unfortified plant-based milks has thus sparked significant nutritional debate.
中文： 在公共衛生與營養學語境中，「19 至 49 歲女性」通常代指育齡婦女。此族群對碘的需求極受重視，因為孕期若缺碘會嚴重影響胎兒腦部發育。在英國等西方國家，牛奶向來是民眾飲食中碘的主要來源；近年植物奶（如燕麥奶、杏仁奶）迅速流行但多未添加碘，因而引發了公衛界對微量營養素缺乏的廣泛討論。
EN： The sentence embeds an appositive prepositional phrase ('at a life stage when iodine matters most') directly between the subject ('women of childbearing age') and the predicate ('had the lowest intakes') within a nominal 'that'-clause. The embedded relative clause introduced by 'when' restricts and modifies 'a life stage'. Notice also the tense shift: 'matters most' uses the simple present to express a general biological truth, while the surrounding narrative adheres to the past tense ('stressed', 'had').
中文： 該句在 that 引導的賓語子句中，於主詞（women of childbearing age）與謂語（had the lowest intakes）之間插入了同位語修飾介系詞短語「at a life stage when iodine matters most」。其中「when」引導關係子句修飾先行詞「a life stage」。此外需特別注意時態錯開現象：雖然主句及子句主要時態為過去式（stressed, had），但「iodine matters most」使用現在簡單式，因為它陳述的是一個普遍存在的生物醫學客觀事實。
The pediatrician pointed out that toddlers, at a crucial age when brain development accelerates, need sufficient fatty acids.
小兒科醫師指出，正處於大腦發育加速之關鍵年齡的幼童，需要足夠的脂肪酸。
EN： The descriptive phrase 'of childbearing age' functions as a postpositive adjectival modifier of the noun 'women'. The preposition 'of' is frequently used in formal or academic English to denote possession of a specific quality, category, or characteristic (e.g., 'of prime importance', 'of great value', 'of reproductive age').
中文： 片語「of childbearing age」（育齡）作為後置形容詞修飾名詞「women」。「of + 抽象/屬性名詞」結構在正式與學術英語中十分常見，用以表示某人事物具有特定的特徵、性質或屬於某範疇（例如：of prime importance 具首要重要性、of advanced age 年邁）。
Individuals of driving age must undergo regular vision testing in this jurisdiction.
在該司法管轄區內，達到法定駕駛年齡的人士必須接受定期視力檢查。
EN： In the UK and several other European nations, unlike in the US where table salt is commonly iodized, cow's milk and dairy products represent the primary dietary source of iodine. Consequently, public health experts closely monitor the dietary habits of 'women of childbearing age', as maternal iodine deficiency during pregnancy and early lactation can cause irreversible cognitive and neurological deficits in the developing fetus.
中文： 在英國及部分歐洲國家，食鹽普遍沒有強制加碘（這與美國等地的「加碘鹽」政策不同），因此牛奶與乳製品成為民眾最主要的膳食碘來源。由於懷孕期與哺乳期缺碘會直接對胎兒的大腦與神經發育造成不可逆的損傷，因此公共衛生領域極為關注「育齡女性（women of childbearing age）」在轉向純植物飲食時的微量營養素攝取狀況。
EN： The verb 'urge' expresses recommendation or demand, which triggers the mandative subjunctive in a 'that'-clause. In formal English, this means the verb in the dependent clause remains in its base form (bare infinitive 'be fortified'), regardless of the subject's number or tense.
中文： 動詞「urge」（呼籲、敦促）表示強烈建議或要求，其引導的 that 子句須使用「虛擬語氣（Mandative Subjunctive）」。在正式英語中，子句中的動詞必須維持原形（此處為被動語態的 bare infinitive：be fortified），不隨主詞單複數或時態改變。
Health authorities recommend that public water supplies be treated with fluoride.
衛生當局建議公共供水系統應加氟處理。
EN： The conjunction 'even as' is used to emphasize that two contrasting or simultaneous events occur at the exact same moment. It often carries a nuance similar to 'at the very same time that' or 'while simultaneously', highlighting an irony or counter-trend.
中文： 連詞短語「even as」用來強調兩件具有對比意味或相互抵觸的事情在「同一時間」發生，常譯為「正當…之際」或「儘管同時…」，帶有一種突顯趨勢矛盾或事態反差的語氣。
The company continues to invest heavily in renewable energy, even as fossil fuel prices temporarily decline.
即便化石燃料價格暫時下滑，該公司仍持續對可再生能源進行大筆投資。
EN： In the UK and Europe, dairy milk has historically been an unintentional but primary dietary source of iodine, largely due to iodophor disinfectants used on cow udders and iodine-supplemented cattle feed. As plant-based alternatives surged in popularity, public health nutritionists discovered that many commercial plant milks were not fortified with iodine, leading to unexpected public health vulnerabilities, especially for women of childbearing age.
中文： 在英國與歐洲，牛奶向來是大眾攝取碘的主要來源，但這在歷史上多半是「無心插柳」的結果——源自牛隻飼料中的碘添加劑以及清潔乳房使用的碘消毒液。隨著植物奶風潮興起，公共衛生營養學家發現市售植物奶大多未添加碘，導致部分以植物奶全面替代牛奶的族群（特別是育齡女性）面臨隱性缺碘風險。
重要單字附有 IPA 發音、定義、例句和互動式測驗。
在本文中： 微量營養素（如維生素和礦物質，身體需要量少但極為重要）
在本文中： 替代品；代替物
在本文中： 強化（食品的營養價值，如添加維生素或礦物質）
在本文中： （食物、飲料或營養素的）攝取量
在本文中： 控制；支配；調節
在本文中： 新陳代謝
在本文中： 缺乏；不足
在本文中： 盛行率；普遍程度
在本文中： 生育的；懷孕生產的
在本文中： 不知不覺地轉變；漸漸轉向
片語包含類型標示、雙語定義、用法說明和例句。
Not having enough of something; lacking.
缺乏……；短缺……
A chemical element present only in minute amounts in a particular sample or environment, especially one essential to plant or animal nutrition.
微量元素
Referring to women who are physiologically capable of becoming pregnant and giving birth (typically aged 15-49).
處於育齡期的；具生育年齡的
To gradually or passively return to a previous state, habit, or preference.
逐漸回流向……；不知不覺又轉回……