每一个访问奥斯威辛的人都会记得那里的头发：它们差不多有两吨重，堆起在玻璃隔板后比一个人还高。

Everyone who visits Auschwitz remembers the hair: almost two tons of it, piled behind glass in mounds taller than a person.

youdao

所以没有理由，当我撤掉隔板后，它们总共占据的体积，会有变化，到目前为止有问题吗？

So there's no reason, when I open that barrier, that the amount of volume they occupy altogether is going to change. Any questions, so far?

youdao

当我们移走隔板并且气体混合后，我们知道事情就结束了。

When we remove the barrier and the gases mix, you know it's over.

youdao

when we remove the barrier and the gases mix, you know it's over.

当我们移走隔板并且气体混合后，我们知道事情就结束了。

麻省理工公开课 - 热力学与动力学课程节选