氧气的英文：
oxygen
oxygen gas

参考例句：

Hydrogen is lighter than oxygen.
氢气比氧气轻。

Although oxygen does not participate directly in the citric acid cycle, the cycle operates only when O2 is present.
尽管氧气没有直接参与三羧酸循环，循环却只有在氧气存在时才能进行，

Those that are more saturated require less oxygen absorption to become rancid
饱和度较高的酸败时所需吸收的氧气较少

The explosive mixture in a rocket consists of fuel and oxygen
火箭中的爆炸性混合物由燃料和氧气构成。

Various chemicals are then injected to combine with unwanted impurity which not burn out by the oxygen.
然后喷入化学物品，使之与不需要的杂质相结合，因为这些杂质没有被氧气烧毁。

The rocket engine carries with it the oxygen of its own .
火箭发动机自带氧气。

top - blown converter steelmaking
氧气顶吹转炉炼钢

Blood is aerated in the lungs.
血液在肺中与氧气结合。

I also would like an air tank, please.
我也要个氧气桶。

The heat brings about a chemical reaction, and oxygen is liberated.
热量引起化学反应，释放出氧气。

oxygen是什么意思：
n. 氧，氧气

To expose(a tissue) to oxygen, as in the oxygenation of the blood by respiration.
供养于使（组织）暴露于氧气中，如通过呼吸作用充氧于血液

It depends on free oxygen or air.
它依靠大量的氧或者空气。

The valve has seriously been oxygenated.
阀门已经被严重氧化。

Water is composed of hydrogen and oxygen.
水是由氢氧组成的。

Oxygen combines with haemoglobin.
氧能与血红蛋白结合。

gas是什么意思：
n. 气体；煤气；毒气；汽油
v. 放出气体；加汽油；用毒气杀伤（人）

development of gas
放出气体；放出毒气

This gas mask can immunize you against poison gas.
防毒面具能使你免遭毒气袭击。

long-distance gas
远程供应的煤气[天然气]

gas evolution analysis
气体放出分析

gas | boast | bragging
吹牛[吹大炮