All right, so you can't get perfect efficiency, 0 but at least if you were able to go to zero degrees Kelvin, then you'd be all set.

好吧，你得不到完美的效率，但至少如果能把温度降到,那你就万事俱备了。

麻省理工公开课 - 热力学与动力学课程节选

I'm given an integer that's a perfect square, and I want to write a little piece of code that's going to find the square root of it. All right so I'm cheating a little, I know it's a perfect square, somebody's given it to me, we'll come back in a second to generalizing it, so what would the steps be that I'd use to walk through it?

完美平方数的整数，我想写一段代码来求这个数的平方根,好，我这儿有点儿作弊了,我知道这是一个完美的平方数了,他们给我的，我们后面会讲怎么产生这个数的，那么我想解决这个问题,需要什么步骤呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

He has also got all of these things, but the thing that sets him apart, that makes him the special kind of hero he is, is his skill in speech which doesn't mean only that he pronounces words very well, or that he selects them very well for beauty or something.

他也拥上述的品质,然而,他与众不同,称之为特别的英雄的是他的说话技巧,这不仅是指他完美的发音,或是,他能很好地遣词用句,措辞优美,或其他什么

耶鲁公开课 - 古希腊历史简介课程节选

OK. In a perfect world, the weather would always be like it's been this week.

好，在一个完美的世界里,天气永远按计划好的来，MIT中的那个。

麻省理工公开课 - 计算机科学及编程导论课程节选