As you train, two things happen to improve your muscles' ability to use oxygen. First, your heart gets stronger and delivers more oxygen; and second, your leg muscles get better at using the oxygen.

有两个方面的因素可以增加你训练时肌肉能利用的氧气量，第一是你的心脏变得更强，能输送更多的氧气，第二就是你腿部的肌肉能更好的利用氧气。

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Objective: to prove oxygen mask oxygen inhalation device effectiveness in order to better educate patients, and improve the effectiveness of its use.

目的：证明氧气雾化吸入器面罩吸氧的有效性，以便更好的向病人进行宣教，提高其利用效能。

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It can improve the control quality to fit the requirement of a process control system for use with a no oxygen copper rod furnace.

该方案在无氧铜杆炉控制系统投用，使控制性能有较大的提高，能满足生产过程的要求。

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"There's definitely a performance-enhancing effect if you use things that improve oxygen transport to the tissue, " says Larry Bowers, an expert on athletic drug testing and senior managing director of the U.S. Anti-Doping Agency.

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