We have the students grouped according to ability, that is we have head-engine in grouping.

我们将学生分组,根据他们的能力，因此在一个小组中有不同能力的人。

麻省理工公开课 - 媒体、教育、市场课程节选

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

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

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

But, in an internal combustion engine what happens is we don't have an oxygen tank.

但是在一个内燃机中,如果我们没有氧气罐会发生什么呢。

麻省理工公开课 - 固态化学导论课程节选

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

In 2006 my engine failed.

006年我的引擎烂了。

耶鲁公开课 - 死亡课程节选

In that process there is a metabolic engine at work, and some people have an efficient engine so that the calories in get banked in the fat, other people have an inefficient engine, that is the calories get wasted as body heat and things like that, and they tend not to gain weight.

这过程中人体内有个工作着的代谢引擎,有些人的代谢引擎效率很高,热量便转化为脂肪储存起来,另一些人的效率低下,能量就以体温等形式被浪费了,因此他们就不容易发胖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

So in other words, this engine is running less efficiently than my Carnot engine.

也就是说，这个热机的效率,比卡诺热机低。

麻省理工公开课 - 热力学与动力学课程节选

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

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

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

Now what I want to do is put up a specific example of the cycle that can be undertaken inside here in an engine, and we can just calculate from what you've already seen of thermodynamics.

现在我想做的是,举一个例子,来具体说明热机内部的循环过程，同时我们可以利用热力学定律进行计算,看看热力学参量发生了什么变化。

麻省理工公开课 - 热力学与动力学课程节选

So the way I've got things written here, q1 Heat's flowing from the hot reservoir to the engine that runs in a cycle.

我把这些都这些这里，是正的，q1，is，positive,热从高温的热源,传到循环工作的热机，对外做功。

麻省理工公开课 - 热力学与动力学课程节选