It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.

让它与大气接触冷却,改变约束，使它继续冷却，然后又再次加热,这就是循环热机，我们以前也研究过，更复杂的机器。

麻省理工公开课 - 热力学与动力学课程节选

So two totally different things but, I think it's, it's a cool, cool concept and obviously amazing program, company.

虽然这是两个完全不同的行业，但我认为他的概念非常好，是个非常出色的项目、公司。

适合创业的旧金山 - SpeakingMax英语口语达人

So you need first to take the liquid helium and cool it below 53 degrees Kelvin before you can do the Joule-Thomson to cool it even further to make liquid helium.

我们首先需要,把温度江都53k一下,然后利用焦耳-汤姆孙实验,来继续冷却它。

麻省理工公开课 - 热力学与动力学课程节选

So, it's a cool finding of that stage, suggesting a limitation in how you deal and make sense of the world.

这是该阶段的一个重要发现,表明儿童在考虑和理解世界的方式上,存在着局限性

耶鲁公开课 - 心理学导论课程节选

All right, this is what's called a recurrence relation, there are actually cool ways to solve them. We can kind of eyeball it.

好，这就是所谓的递归关系,也就是解决问题的相当好的办法,我们可以来看看。

麻省理工公开课 - 计算机科学及编程导论课程节选

But one that I was very interested in was biology, and the reason was we did a lot of cool labs in high school, I loved doing the dissections -- it was very interesting to me to think about how different organs worked, how the heart could be a pump, how the lungs worked.

但当时我很喜欢生物学，因为我高中做了很多很酷的生物实验,我很喜欢解剖-,我觉得了解不同器官,怎么工作很有趣,像心脏怎么泵血。

麻省理工公开课 - 化学原理课程节选

It'd be pretty cool to see actually.

这听上去很棒啊

耶鲁公开课 - 聆听音乐课程节选

Theory was both hot and cool, and it was something about which, following from that, one had not just opinions but very, very strong opinions.

理论很热门，也很酷，对于理论，人们不光有想法，而且是非常强烈的想法。

耶鲁公开课 - 文学理论导论课程节选

I felt like, in my hometown of Huston, it was cool, special, and different that I was an actor.

在我的老家休斯顿，作为一名演员，我觉得很酷、很特别、很与众不同。

关于纽约的生活 - SpeakingMax英语口语达人

And if you cool that it crystallizes in the form of salt.

如果你冷却它,它将以盐的形式结晶。

麻省理工公开课 - 固态化学导论课程节选

Now, it's a very cool argument.

这是个了不起的论证

耶鲁公开课 - 死亡课程节选

so I don't know, I think it's just really cool to be able to work something from the ground up.

所以，我不知道，我就是觉得能从头开始做一件事很酷。

什么是认知科学？ - SpeakingMax英语口语达人

A lot of cool stuff to do, I mean, I got opportunity to work in the city. It's a great city.

有很多很棒的事情可做，我的意思是，我能够有机会
在这里工作。这是个非常棒的城市。

旧金山最棒 - SpeakingMax英语口语达人

That, it's actually almost as famous for being a cool building as it is being an art museum.

它除了作为艺术博物馆的身份被大家所知晓，同时也因很酷的建筑风格而闻名遐迩。

纽约的景点 - SpeakingMax英语口语达人

But it's like universally known. It's like one of the best fashion schools which is like really cool.

但是，算是众人皆知吧。它是最好的时装学校之一，很酷。

和设计专业的朋友 - SpeakingMax英语口语达人

So it was really cool because it was the first time this play had ever been done,

真是太酷了，因为这部戏剧是第一次在舞台上完成，

记忆犹新的表演 - SpeakingMax英语口语达人

That's funny. I mean, that's really cool. If someone is witty enough to do that, then it's awesome.

这确实很好笑，真的很酷！如果有人真的够诙谐能做出那种事，真的很棒！

街头艺术 - SpeakingMax英语口语达人

So there's like a man sort of looking a bit weird, so frozen. It's quite cool.

所以，就是一个男人看上去有点奇怪，被冻住了。那相当酷。

无论去几次也不会腻 - SpeakingMax英语口语达人