时差N小时 只有在地球上才能燃烧?(下)

（单词翻译）

But before this process had been in place for a while, there wasn't enough oxygen in the air for things to burn.

但是，在此转化之前的一段时间，空气中没有足够的氧气可以燃烧东西。

In fact, of all the planets, moons, asteroids¹, and comets in our solar system,

而事实上，整个太阳系的所有的行星、月球、小行星、彗星，

the only place where you can actually start a fire is right here on earth.

你会发现唯一可以生活的地方只有地球。

And even here, it's only been possible relatively² recently.

而就算是地球，也是不久以前才可行。