That would maximize oxygen for optimal combustion.

这的确能为燃烧提供最足的氧气。

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

为了制造这种情况，氧气中的空气比率需要利用惰性气体来降低。

You simply need to deny it oxygen.

只需让其断绝与氧气的接触便好。

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

睡觉的时候，你的呼吸会缓，吸入的氧气也随减少。

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

但磷化氢气体在地球上至少由不需要氧气的细菌产生的。

Asthma can lead to inflamed airways which obstruct oxygen.

哮喘会导致气道发炎，进而阻碍氧气的流通。

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

如果有，它们的大气中否有大量的氧气呢？

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

吸进一口冰冷的湖水，就像获了生命所需的氧气。

It has air hoses they can use to breathe oxygen.

还有提供氧气的软管。

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

空气中的氧气含量上升，空气随可以呼吸。

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

你带着自己的氧气系统，自己的电源，自己的通讯系统。

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

随着身体内的氧气水平上升，许多体力活动和锻炼都会更容易些。

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

在没有氧气的情况下，耳朵的细胞开始停止工作，导致听力障碍。

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

我们需要能将火星大气转化为可供呼吸的氧气的能力。

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气中20% 的氧气。

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

从化学角度来说，我们的大气层会从高浓度的氧气成二氧化碳。

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

你可以暂停一下，深呼吸帮助氧气到达你的头部。

This was a time with very little oxygen.

那一个氧气极为稀缺的时代。

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

纽约市在海平面上，所以我们谈论的真正的氧气。

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

在海拔 8000 英尺的地方，人们很快意识到蒙大拿州的氧气并不真实。