It's the carbon dioxide we breathe out.

問題是我們呼出的二氧化碳

But they could be under threat from all that extra carbon dioxide.

但受過量二氧化碳的影響 它們的生存受到了威脅

And then, when there's no more carbon dioxide ice, it disappears.

隨著干冰消失 這景象也消失了

That would react with the carbon dioxide and turn it into oxygen.

鎂會(huì)和二氧化碳反應(yīng)生成氧氣

The van's engine would choke on the carbon dioxide.

貨車的引擎會(huì)被二氧化碳阻塞

Much more powerful than carbon dioxide, for example.

比如說 它比二氧化碳還強(qiáng)

It looks like the formula for sulfur dioxide.

看起來像二氧化硫[SO2]化學(xué)式

But they do the same thing they let the oxygen in, and the carbon dioxide out.

但它們的功能相同 讓氧氣進(jìn)入 讓二氧化碳排出

We need oxygen to make carbon dioxide.

我們則需要將氧氣轉(zhuǎn)化成二氧化碳

It's a silicon dioxide crystal, otherwise known as quartz.

這是二氧化硅晶體 也就是石英