- 1nB2
/ˈɑːksɪdʒən/ · /ˈɒksɪdʒən/
A gas in the air that has no colour or smell, and that people, animals, and plants need to stay alive.
氧氣
核心畫面
Picture the invisible gas all around us in the air — no colour, no smell — that people, animals, and plants must take in to stay alive.
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法,原文照列,我們還沒有寫成教學內容。上面的說明才是我們自己寫的;有些用法可能上面已經講過了。
oxygennoun/ˈɒksɪd͡ʒən/
- 1
The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas. Sometimes called elemental oxygen to distinguish it from molecular oxygen.
- Holonyms: dioxygen, O₂, oxygen (loose sense)
- By molar fraction, calcium oxide contains equal parts calcium and oxygen.
- 2
Molecular oxygen (O₂), a colorless, odorless gas at room temperature.
- Meronym: oxygen (strict sense)
- About 21% of the air you breathe is oxygen.
- 3
medicinesciencesA mixture of oxygen and other gases, administered to a patient to help them breathe.
- 4
An atom of this element.
- Look first at any structure to see if there is a carbon with two oxygens attached. Hemiacetals, hemiketals, acetals, and ketals are all alike in that regard.
- 5
A condition or environment in which something can thrive.
- Silence is the oxygen of shame.
- They hoped to starve the terrorists of the oxygen of publicity.
資料來源:英文維基詞典 English Wiktionary(CC BY-SA 4.0)。 原文照列,未經改寫。