限制人体体能表现的因素之一是肌肉从血液中吸收的氧气量。

One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream.

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它们生产出略高于地球的稳定的氧气量。

They produced stable oxygen levels slightly higher than on Earth.

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短时间里吸收二手烟会刺激你的肺部，并减少血液中的氧气量。

Breathing secondhand smoke for a short time can irritate your lungs and reduce the amount of oxygen in your blood.

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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