氧氣是一種無色、無味、無臭的氣體元素，對大多數生物的呼吸和燃燒過程至關重要。
化學元素
EN: A chemical element (symbol O) that is a gas essential for life.
翻譯: 一種化學元素（符號 O），是維持生命所必需的氣體。
呼吸氣體
EN: The gas that animals breathe in from air or water to survive.
翻譯: 動物從空氣或水中吸入以維持生存的氣體。
助燃劑
EN: A substance that supports combustion, allowing things to burn.
翻譯: 一種支持燃燒的物質，能使物體燃燒。
醫療用途
EN: Supplemental gas used in medical treatment for patients with breathing difficulties.
翻譯: 用於醫療中，為呼吸困難的患者提供的補充氣體。
小提醒：注意：'oxygen' 是不可數名詞，通常不加 'a/an'，也無複數形。例如：'The patient needs oxygen.'（病人需要氧氣。）而非 'an oxygen'。
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Oxygen" from YouTube Videos
Richard Weller: Could the sun be good for your heart?
TED
“And here's this incredibly simple molecule, a nitrogen and an oxygen that are stuck together, and yet these are hugely important for [unclear] our low blood pressure, for neurotransmission, for many, many things, but particularly cardiovascular health.”
1. a chemical element (O) that is a gas with no colour, taste, or smell, and is necessary for most living things to breathe and for things to burn
氧（化學元素，一種無色、無味、無臭的氣體，為大多數生物呼吸及物質燃燒所必需）
Plants produce oxygen during photosynthesis.
植物在光合作用過程中會產生氧氣。
The patient was given pure oxygen to help him breathe.
病人被給予純氧以幫助他呼吸。
2. air or gas containing this element, used for medical treatment or in activities like diving
含氧的空氣或氣體（用於醫療或潛水等活動）
The mountain climbers carried portable oxygen tanks.
登山者攜帶了便攜式氧氣瓶。
She needed supplemental oxygen after the surgery.
手術後她需要補充氧氣。
3. something that is as necessary for life, growth, or activity as oxygen is for breathing
比喻像氧氣對呼吸一樣，對生命、成長或活動不可或缺的事物
Honest feedback is the oxygen of a healthy team.
誠實的反饋是一個健康團隊不可或缺的氧氣。
For the artist, creativity is like oxygen.
對這位藝術家來說，創造力就像氧氣一樣。
| Pattern | Meaning | Example |
|---|---|---|
| oxygen + noun | 氧氣 + 名詞 | The patient needed supplemental oxygen. (病人需要補充氧氣。) |
| get/absorb + oxygen | 獲取/吸收氧氣 | Fish absorb oxygen through their gills. (魚透過鰓吸收氧氣。) |
| be rich/poor in oxygen | 富含/缺乏氧氣 | The high-altitude air is poor in oxygen. (高海拔的空氣含氧量低。) |
| a supply/flow of oxygen | 氧氣的供應/流動 | The device ensures a steady flow of oxygen. (該設備確保穩定的氧氣流動。) |
| oxygen + level/concentration | 氧氣 + 水平/濃度 | The oxygen level in the room dropped. (房間內的氧氣水平下降了。) |
EN:We need fresh air to breathe.
翻譯:我們需要新鮮空氣來呼吸。
EN:The diver carried a tank of pure oxygen.
翻譯:潛水員攜帶了一罐純氧。
EN:The room was filled with stale air.
翻譯:房間裡充滿了污濁的空氣。
在涉及呼吸、燃燒或科學描述時，若特指該化學元素或氣體，應使用 oxygen（氧氣），而非泛指空氣。
oxygen vs oxygenation
「oxygen」是物質名詞，指氧氣這種化學元素；「oxygenation」是過程名詞，指氧合或充氧的過程。
oxygen vs air
「oxygen」是單一氣體元素；「air」是多種氣體混合而成的空氣。
oxygen vs ozone
兩者都是氧元素組成的物質，但「oxygen」是氧氣（O₂），「ozone」是臭氧（O₃），分子結構與性質不同。
在口語中，當引述或提及某個關於氧氣的普遍事實或概念時，常用 "oxygen" 來指稱。 EN: I remember learning in school that oxygen is essential for fire. 翻譯: 我記得在學校學過，氧氣是燃燒不可或缺的。
EN:He kept saying, "We need more oxygen in this stuffy room."
翻譯:他一直說：「這間悶熱的房間需要更多氧氣。」
在非正式對話中，"oxygen" 可用來比喻極度重要、不可或缺的事物，帶有強調語氣。 EN: For a diver, a reliable tank is like oxygen—you can't go without it. 翻譯: 對潛水員來說，可靠的氣瓶就像氧氣一樣——沒有它不行。
EN:Honest communication is the oxygen of a healthy relationship.
翻譯:坦誠的溝通是健康關係的氧氣。
在思考或組織語句時，說話者可能會重複 "oxygen" 或使用相關短語作為填充詞，尤其在討論科學或健康話題時。 EN: The process... you know... oxygen... is absorbed into the bloodstream. 翻譯: 這個過程...你知道的...氧氣...會被吸收到血液中。
EN:We have to monitor the... uh... oxygen levels in the patient.
翻譯:我們必須監測病人的...呃...氧氣水平。
注意：以上口語用法（如引述、比喻性強調、停頓填充）僅適用於非正式對話或演講。在正式寫作（如學術論文、科學報告、官方文件）中，應直接、精確地使用 "oxygen" 指稱其化學元素或氣體本身，避免口語化的填充詞或過於隨意的比喻。
oxygen supply
noun
氧氣供應
oxygen level
noun
氧氣含量；血氧濃度
oxygen tank
noun
氧氣瓶；氧氣筒
oxygen mask
noun
氧氣面罩
deprive of oxygen
verb phrase
剝奪氧氣；使缺氧
oxygen saturation
noun
血氧飽和度
liquid oxygen
noun
液態氧
oxygen debt
noun
氧債
×We need more oxygens to breathe.
✓We need more oxygen to breathe.
Oxygen is an uncountable noun. It does not have a plural form when referring to the substance itself.
×The oxygen is essential for life.
✓Oxygen is essential for life.
When referring to oxygen as a general concept or substance, we do not use the definite article 'the'.
×Oxygen are a gas.
✓Oxygen is a gas.
Oxygen is a singular, uncountable noun and requires a singular verb.
×The patient is under oxygen.
✓The patient is on oxygen.
The correct preposition when referring to receiving supplemental oxygen through medical equipment is 'on'.
×oxigen
✓oxygen
The correct spelling is 'oxygen'. A common error is misspelling the 'y' as 'i' or omitting the 'y' sound.
×oxygen's level
✓oxygen level
We typically use the noun 'oxygen' as a modifier directly before another noun (forming a compound noun), not in the possessive form.