You couldn't just run something successfully in a cycle and get work out of it, using the heat from the hot reservoir, without also converting some of the heat that came in to heat that would flow into a cold reservoir.

如果一样东西在循环工作过程中,只有热从高温热源中流出，而没有热流入低温热源，那么此过程,不可能对外做功,不可能把所有热。

麻省理工公开课 - 热力学与动力学课程节选

Now what I'd like to do is something that you'll probably cut out because of copyright issues but it's a kind of fun warm-up anyway, so we're going to go ahead and do this and then we'll actually start.

首先我想做个小游戏,不过这个片段可能由于版权问题而被切掉,但是这个热场游戏很有趣,那么,我们马上开始,游戏之后再正式上课

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