That would maximize oxygen for optimal combustion.

这确能为燃烧提供最足氧。

To counteract this oxygen would have to be diluted with non reactive gas.

为了制造这种情况，氧中空比率要利用惰性降低。

You simply need to deny it oxygen.

只让其断绝与氧接触便好。

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

睡觉时候，你呼吸会变缓，吸入氧也随之减少。

But phosphine gas is produced on earth at least by bacteria that don't need oxygen.

但磷化氢在地球上至少由不要氧细菌产生。

Asthma can lead to inflamed airways which obstruct oxygen.

哮喘会导致道发炎，进而阻碍氧流通。

If they do, do they have a copious amount of oxygen in their atmospheres?

如果有，它们大中否有大量氧呢？

The first gulp of icy lake water felt like the breath of life.

吸进第一口冰冷湖水，就像获得了生命所氧。

It has air hoses they can use to breathe oxygen.

还有提供氧软管。

The amount of oxygen in the air rises, and the air becomes breathable.

空中氧含量上升，空随之变得可以呼吸。

You have your own oxygen system, your own power supply, your own communication system.

你带着自己氧系统，自己电源，自己通讯系统。

And with oxygen levels on the rise, physical activity and exercise will already feel easier.

随着身内氧水平上升，许多力活动和锻炼都会变得更容易些。

The cells of your ears start shutting down without oxygen, causing hearing impairment.

在没有氧情况下，耳朵细胞开始停止工作，导致听力障碍。

We're going to need the ability to convert the martian atmosphere into breathable oxygen.

我们要能将火星大转化为可供呼吸氧能力。

Scientists estimate that the Amazon produces 20 percent of the oxygen in the planet's atmosphere.

科学家估计，亚马逊地区产生了地球大中20% 氧。

Our atmosphere would flip, chemically speaking, from a heavy concentration of oxygen to CO2.

从化学角度说，我们大层会从高浓度氧变成二氧化碳。

You can pause, take a deep breath helps the oxygen get to your head.

你可以暂停一下，深呼吸帮助氧到达你头部。

This was a time with very little oxygen.

那一个氧极为稀缺时代。

New York City is at sea level, so we're talking about real oxygen.

纽约市在海平面上，所以我们谈论真正氧。

And at 8,000 feet elevation, one quickly realizes Montana's oxygen just isn't real.

在海拔 8000 英尺地方，人们很快意识到蒙大拿州氧并不真实。