So you know, what the second law is doing, in other words, it's putting these restrictions on how well or how effectively we can convert heat into work in the case of the engine, or work into heat extracted in the case of a refrigerator.

你们知道，在热机中，热力学第二定律的作用，换句话说，就是给热量,转化为功的效率,施加限制,或在制冷剂中，对抽取热量,进行限制。

麻省理工公开课 - 热力学与动力学课程节选

We did that, we came up with very good Chinese search engine technology, and we signed up a lot of the Chinese portals in a very short period of time.

我们开发了,很好的中文搜索引擎技术，并在短期内，和许多门户网站公司,签了合约。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

So what this says is the efficiency of any reversible engine T1 has to be one minus T2 over T1.

这就是说,任何可逆热机的效率都是,负T2除以。

麻省理工公开课 - 热力学与动力学课程节选

I want to see the end of the internal combustion engine applied to personal mobility.

我想见证内燃机不在应用于,人们出行生活。

麻省理工公开课 - 固态化学导论课程节选

The Book of the Month Club was a mail-order book club that started in 1926 and it became an incredibly powerful engine for selling books, just as Oprah's Book Club is today.

月读书友会是一个创立于1926年的邮购书友会6,是图书销售的强大引擎，正如今天的奥普拉书友会一样。

耶鲁公开课 - 1945年后的美国小说课程节选

Now we will never know, and don't let anyone ever suggest to you that you will ever know, what Milton could possibly mean by this deliberately perplexing image of the two-handed engine at the door.

我们永远不会知道,弥尔顿在这句描写门边的双手引擎的,刻意的意象叠加里想要表达什么。

耶鲁公开课 - 弥尔顿课程节选

It's just like you could say some of the principles of mechanics are very obvious, but to make an engine that operates in terms of those principles is not obvious.

这就像你能说,很多机械原理都显而易见，但是要根据这些原理,制作一个能够运转的发动机,就不那么容易了。

耶鲁公开课 - 金融市场课程节选

That slavery may have its bad aspects but it has been the engine of good, it has been the engine of empires, the engine of wealth, the engine of greatness.

奴隶制本身也有不好的方面,但是它曾是一切善行的起源,帝国崛起的推动力,是一切财富的来源,伟大事物的起源

耶鲁公开课 - 美国内战与重建课程节选

And of course even if in many cases, the engine continues to exist for a while, after the destruction of the car, certainly it doesn't follow the engine is immortal that continues to exist forever.

当然，即使在许多情况下，发动机在汽车毁坏后，能继续存在一段时间，但当然不能得出结论说,发动机是不朽的会永远存在下去。

耶鲁公开课 - 死亡课程节选

Those kinds of information are not easily accessible by following links or using the traditional search engine technology.

通过跟踪链接,或者传统搜索技术,是无法轻易获取的这些信息的。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

So now let's look at the efficiency of our irreversible engine.

再来看看,不可逆热机的效率。

麻省理工公开课 - 热力学与动力学课程节选

And we had the similar statement by Kelvin about the heat engine that required that some heat gets dumped into a cold reservoir in the process of converting the heat from the hot reservoir into work.

相同的陈述,同样的有开尔文表述：,把热量完全从高温热源,转移至低温热源的过程中,必然有功的输出。

麻省理工公开课 - 热力学与动力学课程节选

And Manifest Destiny was the engine of capitalism, make no mistake.

而且,命运天定思想,是资本主义的发动机,这点无容置疑

耶鲁公开课 - 美国内战与重建课程节选

Can we conclude from the argument from recycling and the fact that the engine is a prior existing part from which the car was built, that the engine will continue to exist forever after the destruction of the car.

能否根据源于轮回的论证以及,发动机是汽车成形之前就,已经存在的部分这一事实，得出结论说发动机能够在,汽车毁掉后还继续永远存在。

耶鲁公开课 - 死亡课程节选

What the Market Revolution was, in so many ways, was an engine, a tremendous Charles Sellers has written a famous book on this it was a tremendous engine for what became arguably the most prevalent idea of the entire nineteenth century in America, and that's the notion of progress.

在很大层面上,市场革命,就是一个巨大的发动机,查尔斯·塞勒斯,曾经为此写过一部书,市场这个巨大的发动机,它带来了十九世纪最流行且有争议的看法,即,对进步的观念

耶鲁公开课 - 美国内战与重建课程节选

In a real engine, of course, you can approach the reversible limit.

在一个真实的热机里，当然，你可以达到可逆极限。

麻省理工公开课 - 热力学与动力学课程节选