Deprived of oxygen, the bird begins to suffocate.

失去了氧气 鸟开始窒息。

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。

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。

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

今天，地球大气中只有大约 20% 的氧气。

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。

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？

The ratio of hydrogen to oxygen in water is 2 to 1.

1。

If a person stops breathing, there is less oxygen in his blood.

如果人们停止呼吸，其血液中的氧气量就会减少。

It is bacteria that have generated the oxygen we breathe on earth.

正是细菌生产出我们在地球上呼吸的氧气。

Muscles processing more energy require more oxygen to keep up the exertion.

肌肉处理更多的能量需要更多的氧气来维持运动。

The oxygen out of the iron oxide comes off as oxygen gas.

氧化铁中的氧会以氧气的形式逸出。

Organic pollution, such as sewage, can cause water to lose all oxygen.

比如，污水中的有机物会吸收水中氧气。