Today, Earth's atmosphere is only about 20% Oxygen.

今天，地球大气中只有大约 20% 的氧气。

Deprived of oxygen, the bird begins to suffocate.

失去了氧气 鸟开始窒息。

And as it thrives, our air gets less and less oxygen.

所以当它越来越猖獗，空气里的氧气就会越来越少。

That would maximize oxygen for optimal combustion.

这的确能为燃烧提供最足的氧气。

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

睡觉的时候，你的呼吸会变缓，吸入的氧气也随之减少。

If she moves in, she will burn up all my oxygen, and I need it.

她要是搬进来，我的个人空间都没了，而我需要自己的空间。

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。

So, the brain isn't getting enough oxygen.

那大脑肯定供氧不足。

You want me to take away your oxygen?

你想让我拿走你的氧气罐吗？

No, there would have been life, just no oxygen.

不，有生命，只是没有氧气。

It can also take in oxygen through its skin.

它还可以通过皮肤吸收氧气。

The cornea gets devoid of oxygen.

角膜会出现缺氧状态。

The organic matter may partially decompose, using up the dissolved oxygen in the sediment.

有机物会局部分解，消耗沉淀里的溶解氧。

So, the tissues get no oxygen, resulting in severe hypoxia.

因此组织无法获得氧气，导致重度缺氧。

To get the oxygen to your cells you are breathing.

为了让氧气进入细胞，您需要呼吸。

Oxygen will run out tomorrow morning.

明天早上氧气也将耗尽。

Oxygen I'll run out tomorrow morning.

氧气明早就会枯竭了。

Oxygen, Carbon Dioxide, Methane or Argon?

氧气，二氧化碳，甲烷还是氩气？

And it contains no oxygen. Not an easy place to survive.

但是水里没有氧气。这可不是一个容易生存的地方。

Why did they clear the rainforests when they needed the oxygen?

人类明明需要氧气，为什么还要大肆砍伐雨林？