So thermodynamics, based on these four laws now, requires an edifice, and it's a very mature science, and it requires that we define things carefully.

热力学是一座，建立在这四条定律上的大厦,它是一门非常成熟的科学，也要求我们在定义东西时非常小心。

麻省理工公开课 - 热力学与动力学课程节选

This is very simple but it's a great way to ask about a specific category among many different categories.

这是个非常简单的句型，但它在询问不同种类中某一特定类型的事物时是非常理想的句型。

What kind of 课堂 - SpeakingMax英语口语达人

What is right in normal situations will not be the same as what is right in states of emergency.

是非常不同于,紧急状态时的正当。

耶鲁公开课 - 政治哲学导论课程节选

This is actually very representative of when you do research in the laboratory, you will find often things do not work quite exactly as they worked 20 minutes ago when you just checked it in your office, for example.

在实验室做研究时,这个实际上是非常具有代表性的，举个例子,当时只是在办公室核查它时,你经常会发现事物无法,像它们20分钟之前那样精确的工作。

麻省理工公开课 - 化学原理课程节选

And when we talk about transformation, actually mean it quite literally-- changing of the form, changing of the brain as we'll talk about.

当我们谈到转变时，实际上是非常字面的说法-,形态的改变，大脑的改变，我们一会就谈到。

哈佛公开课 - 幸福课课程节选

So a strike--and that's good in the bowling world.

全打，打保龄球时这是非常棒的。

耶鲁公开课 - 心理学导论课程节选

Tanaka This is Tanaka who you just saw was the only one I found at the place when we were looking for someone for an interview. And she gave us this fascinating story of what is the life for a mother worrying about her daughter in this time of changes.

刚才你们看见的是,是我在采访时发现的唯一的人,她给我们讲述了一个,非常感人的故事,是关于母亲如何担心她女儿的。

麻省理工公开课 - 媒体、教育、市场课程节选

And we know that chlorine is very aggressive when it comes to electrons.

而且我们知道遇到电子时,氯是非常活泼的。

麻省理工公开课 - 固态化学导论课程节选

Ivan Ilyich The astonishing thing is that Ivan Ilyich is shocked to discover that he's mortal.

令人惊讶的是,发现自己会死时非常受震撼。

耶鲁公开课 - 死亡课程节选

These are going to be fairly common-sense definitions, but they're important, and when you get to a problem set, really nailing down what the system is, not more, nor less, in terms of the amount of stuff, that's part of the system, it's going to be often very crucial.

这些是,很常识性的定义，但是很重要，当你要解决问题时，务必要搞清楚系统是什么，它包含多少物质，不能多也不能少，这往往,是非常重要的。

麻省理工公开课 - 热力学与动力学课程节选

But it's amazing to read the letters and the language of slave traders when they write to each other, the complacency, the mixture of just pure racism on the one hand and just business language on the other.

当你阅读到那些奴隶商们,在往来的书信中所使用的言辞时,会令你非常震惊的,一面是混合在纯粹的种族歧视中的自满,另一面是那种完全商业化的措辞

耶鲁公开课 - 美国内战与重建课程节选

I'm going to" is going to be very useful for you to refer to what's going to happen in the future.

I'm going to”在形容将来会发生的事情时，是一个非常有用的句型。

I'm going to 课堂 - SpeakingMax英语口语达人

Now in the course of this, a student asked a very good question that I should have pointed out a long time ago, and that is: when an orchestra plays or an ensemble plays and they're looking at their music and they're reading their music, do they play a chord?

在这期间，我本该早就提起的，由一个学生提出的非常好的问题是，当管弦乐队演奏或合奏团演出时,他们各个盯着并读自己的那部分乐谱，他们奏出和弦了吗？

耶鲁公开课 - 聆听音乐课程节选

Remind me of" is a really good phrase to use for when you're talking about a memory

当你谈起一段回忆时，“Remind me of” 是一个非常好的句型。

remind me of 课堂 - SpeakingMax英语口语达人

It depends on” is useful when you're talking about one subject in relationship to another subject.

当你在谈论一个话题与另一个话题的关系时，“It depends on”句型是非常有用的一个句型。

It depends on 课堂 - SpeakingMax英语口语达人

Let me“ is a good pattern to use in a sentence when you're asking for permission.

当你在请求允许时，“Let me”句型是一个非常有用的句型。

Let me 课堂 - SpeakingMax英语口语达人

So, we can use Coulomb's force law to think and it does that, it tells us the force is a function of that distance. But what it does not tell us, which if we're trying to describe an atom we really want to know, is what happens to the distance as time passes?

来考虑这两个粒子之间的,它告诉我们力随距离的函数关系,但它不能告诉我们，而我们如果要描述,原子又非常想知道的是,距离随时间的变化时怎样的？

麻省理工公开课 - 化学原理课程节选

So, that's going to be important later when we get to bonding, but just take note of it now, we have two nodes, or we have two lobes, excuse me, each with a separate phase.

这等到我们之后讲到成键时是非常重要的，现在先要记住，我们有两个节点，不好意思，是两个叶瓣，每个都是不同的相位。

麻省理工公开课 - 化学原理课程节选

And this is extremely useful when it comes to filling in gaps in sounds.

当需要在声音中填入间隔时,自上而下加工是非常有效的

耶鲁公开课 - 心理学导论课程节选

So in other words a very low energy is what we're going to have when we talk about the orbitals -- the energy of the 2 s orbital is going to be less than the energy of the 2 p orbital.

换句话说一个非常低的能量,是我们将会得到的当我们谈论轨道时,2s轨道的,能量比2p轨道,的能量低。

麻省理工公开课 - 化学原理课程节选

Remember it's the external pressure that's important. In this case, because it's a reversible process, the external pressure turns out to be always the same as the internal pressure.

是过程非常缓慢,比如我把体积，从V1压缩到V2时，我做得十分缓慢,在过程中的任何一点。

麻省理工公开课 - 热力学与动力学课程节选