Everything else is across the ground. In basketball you go up a little bit, but not anywhere near as cool.

VOA: special.2009.12.09

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 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