And hopefully on your paper, I think I should probably re-draw mine here.

希望在你的纸上，我想我还是把我的在这再写一遍吧。

麻省理工公开课 - 化学原理课程节选

Let's re-draw this, so it looks a little bit neater, where we have a triple bond in the middle instead, and again, we need our negative 1 charge there.

让我们重写这个，这样看起来更整洁一点，我们有一个三键在中间，同样地，我们这里需要一个负电荷。

麻省理工公开课 - 化学原理课程节选

Well, if we wanted to draw that, we have HF, whoops --It looks something like that.

如果我们想画他，哎呀，它看起来有点像那个某个东西。

麻省理工公开课 - 固态化学导论课程节选

So technically, if you ask what does the velocity stand for-- Let me draw a general situation.

从学术角度来说,如果你问速度表示什么,那让我来给你画一个常见的场景

耶鲁公开课 - 基础物理课程节选

It's going along.At a certain point-- Let's draw our amoeba splitting,right?

到了某个阶段-,我们来画它进行分裂？

耶鲁公开课 - 死亡课程节选

Now, I want to draw-- what if we write 10,000 policies?

现在我来画...,如果签了10000份保单会怎样

耶鲁公开课 - 金融市场课程节选

And if I draw a diagram on a T-V diagram of T-V V1 I'm starting with some V1 here.

画出过程的,图，what，I’m，doing，here，初态是。

麻省理工公开课 - 热力学与动力学课程节选

You put a child on one side of the mountains and you ask him to draw it, and a four- or five-year-old can do it easily, but then you ask him to draw it as it would appear from the other side and children find this extraordinarily difficult.

你让孩子在模型的一边,要求他把自己看到的三山模型画出来,四五岁的儿童便能够轻易做到,但是,如果你要求儿童画出,从模型另一边看过去的样子,儿童就会觉得非常困难

耶鲁公开课 - 心理学导论课程节选

So when you go ahead and draw these on your problem-sets or on your exams, it's a good idea to put these dashed lines in, both for you and for people reading it to see exactly where your molecular orbitals are coming from.

所以当你在做课后题,或者考试的时候要画这些图时，最好把这些虚线放进去，既方便你自己也方便别人知道,这些分子轨道是从哪里来的。

麻省理工公开课 - 化学原理课程节选

I want to finish this discussion by including the anti-bonding orbital, and this is a tip for you when you're drawing your molecular orbital diagrams, any time you draw a bonding orbital, there is also an anti-bonding orbital that exists.

我想要以包含反键轨道,来结束这个讨论，告诉你们一个,画分子轨道图的小技巧，任何时候你画一个成键轨道，都会存在一个反键轨道。

麻省理工公开课 - 化学原理课程节选

So I'm just going to re-draw my skeleton.

那么我要先把骨架重新写在这。

麻省理工公开课 - 化学原理课程节选

But there's another way to do this and I'm going to give you now the simplest example of the other way, which is to draw free-body diagrams.

不过还有另外一种方法,现在我来给你们演示,另外一种方法最简单的例子,也就是隔离法的受力分析

耶鲁公开课 - 基础物理课程节选

Once you're doing this on your own, -- especially, for example, on exam 2, which is a ways down the road, you won't be able to look at those steps, so you need to make sure that you can go through them without looking at them, but for now we can look at them as we are actually learning how to draw the Lewis structures, and rather just go through them step-by-step, it's more interesting to do it with an example.

每当你要画一个路易斯结构的时候，特别是，比如，在第二次考试中，在不远的将来，你将看不到这张表，因此你需要确保自己在不看这张表,的情况下也能按照上面的流程来画，但是目前我们是可以看着这张表,来学习如何画路易斯结构的，而相比于一步一步地讲，通过例子来演示一下会更有意思。

麻省理工公开课 - 化学原理课程节选

And, I know I need to come up with four symmetric equi-length bonds, and let's just see, let's draw the structure here.

我想我们需要,4个对称的等长的键，让我们画出CH4的结构。

麻省理工公开课 - 固态化学导论课程节选

They want to make sure that there's a significantly high probability-- sufficiently high probability-- that even if they get a bad draw and there are a lot policies that require paying out, that these reserves will satisfy.

他们想要确保,即使保险公司遇上严重事件,面临大量的保单赔付,他们仍然有充分能力,来应付这种状况,也就是说准备金必须足够多

耶鲁公开课 - 金融市场课程节选

B + A would be--First draw B and from there you draw A.

+ A 就是先画矢量 B,然后再画矢量 A

耶鲁公开课 - 基础物理课程节选

So if we do this and we form the molecule ammonia, let's switch to a clicker question, and have you tell me what the bond angle - is going to be in ammonia -- HNH Actually, let me draw it on the board as you look -- actually, can you put the class notes on, since you don't actually have your notes to refer to.

如果这样做的话，我们就可以形成氨分子，让我们来做一个课堂练习,你们告诉我氨分子中的键角是多少-,键角，the，h，n，h，bond，angle。,实际上让我在黑板上画出它来，这样你们可以看到实际上-,你能把课堂讲义放出来吗，因为你们没有讲义可以参考。

麻省理工公开课 - 化学原理课程节选