What we have done is pushed back the Taliban and what we have done also is start to break that chain of terror that links the mountains of Afghanistan and in Pakistan to the streets of Britain,"

VOA: standard.2009.07.27

Is this possible? That's what the first law says it's possible; work is heat, and heat is work, and they're the same thing. You can break even 100% maybe. So let's go back and see what work is.

00%的效率,我们可以从大气中吸收热量，用来驱动我们的汽车,效率也应该能达到。

麻省理工公开课 - 热力学与动力学课程节选

So we are gonna take a moment's break and be right back with more on Stan Katz on the Inner Core.

所以我们先休息一下，马上回来,带来有关Stan，Katz的更多精彩内容。

普林斯顿公开课 - 人性课程节选