臭氧是一种高度活跃的氧气形态。

Ozone is a highly reactive form of oxygen gas.

《柯林斯英汉双解大词典》

你睡觉时呼吸更少，所以你得到的氧气更少。

You breathe less when you sleep, so you get less oxygen.

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如果冠状动脉没有重大堵塞，心脏的各个部位会收到等量的氧气。

If all the coronary arteries are free of significant obstructions, all parts of the heart will receive equal amounts of oxygen.

《柯林斯英汉双解大词典》

You could run the reaction, take solid iron gaseous oxygen, form iron oxide, measure the heat of formation of it, tabulate it.

你可以进行一个反应,用固态铁和氧气生成氧化铁，测量它的生成热，列成表格。

麻省理工公开课 - 热力学与动力学课程节选

If we take hydrogen peroxide in the liquid state, it can break down to form water and oxygen.

如果我们有一些液态的过氧化氢，它会分解成水和氧气。

麻省理工公开课 - 热力学与动力学课程节选

You regulate your breathing rate in order to accomplish that and we'll talk about this in a couple of weeks.

人们调节呼吸的频率来获得足量的氧气,我们过几周会讲到这方面内容

耶鲁公开课 - 生物医学工程探索课程节选