Plasma shines because it's hot, but as it cools it dims.

等离子体发光是因为它是热的，但当它冷却时，它就变暗了。

He explains that as the hot center of the planet cools, it slowly shrinks.

他解释说，火星会随着其炎热中心的降温而慢慢缩小。

Basically it dries and grinds up all of the inside, and then cools it.

基本上，它把里面的东西都干燥、磨碎，然后再冷却。

It is cool. It's like recycling.

的确很酷。就像回收一样。

This is cool. - It really is.

这太酷了 -真的是很酷。

As the lava cools, it creates a new range of volcanic mountains, and a new ocean floor.

冷却之后熔岩变成新火山与新海床。

How cool it was in the hall.

穿堂里多凉快啊！

Blow on your food to cool it off.

吹一下，让它冷一点。

What I saw was not cool. It was grotesque.

我看到的画面一点也不酷。而是很怪异。

Girls, let's cool it on the gossip, okay?

姑娘们 别八卦了行吗？

Cool! It must be amazing to work at a bar!

哇，好酷啊，在酒吧工作很有意思吧？

It's cool. It's very nautical, isn't it?

很酷。很有航海风格，不是吗？

Cool. It's like an addiction kind of in a way.

真酷。从某种程度上说就像上瘾一样。

Look at this. Isn't this cool? It's a car!

看看这个。这不是很酷吗？这是一辆车！

Well that sounds kinda cool, it's kinda like The Hobbit.

听起来挺酷啊。有点像是霍毕特人啊（《指环王》中的穴居小矮人）。

We have learned that when water-vapour is cooled it is condensed.

我们知道, 水蒸气遇冷之后就会产生冷凝。

Raj, cool it... he's gonna make us hair diamonds.

拉杰冷静一点… … 他要给我们做头发钻石。

Oh, cool, it tells you when someone's reading your profile.

哎哟不错，网络显示，有人在看你的介绍。

Still, I was blown away at how cool it kept the phone.

尽管如此，我还是被它保持手机的凉感所震撼。

Now, the farther I get from the center, the cooler it gets.

现在我离中心越远，温度越低。