Depending on what kind of chemistry you go in to, you might accidentally memorize parts of the table, which is fine, but what you really want to know how to do is know how to use the periodic table.

取决于你今后从事哪个方向的化学研究，你可能会不经意地记住周期表的某一部分，这就够了，但是要注意,你真正需要知道的是如何使用元素周期表。

麻省理工公开课 - 化学原理课程节选

I know it's boring, but we need to do it so you know what the ground rules are.

我知道这很无聊，不过为了让你们了解规则,我们必须得做这个。

麻省理工公开课 - 计算机科学及编程导论课程节选

But what do you- I want to know what you think. You defend them.

但我想知道的是，你是怎么想的,你是怎么想的，才会为他们辩护。

耶鲁公开课 - 公正课程节选

That's because I'm a bear but-- Do you know what that means?

那是因为我对股市持悲观态度,但,你们知道那是什么意思吗?

耶鲁公开课 - 金融市场课程节选

But do you know what the force on the body is?

但你知道物体受到了多大力的作用吗

耶鲁公开课 - 基础物理课程节选

If unfamiliar, these are the mechanical computer devices that you have to use to buy a ticket on the T these days and there was one of these really awkward but touching situations where it was clear that this woman had no idea, you know, what to do, how to get from here to here, and I could see her just staring at the turnstiles that you're supposed to go through to get into the subway.

如果不熟悉，这是机械计算机设备,当今你必须使用它们来买地铁票,它们实在是难操作的,这个令人同情的情况是,明显这位老太太不知道怎样操作，怎样从这一步到那一步,我看见她只是凝视着,地铁的栅门口。

哈佛公开课 - 计算机科学课程节选

And yeah, I know you know how to do it, but let's think about what might happen if I wanted to do that.

对，我知道你们知道该怎么做，那么让我们看看如果我,想要完成的话会发生什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

Well let's see. My fall back is, I could just do linear search, walk down the list one at a time, just comparing those things. OK. So that's sort of my base. But what if I wanted, you know, how do I want to get to that sorted list? All right?

我只能做线性搜索了,一次遍历一遍列表，一个一个比较，但如果我想要,那怎样得到有序的列表呢？,现在的一个问题是，我们排序之前？

麻省理工公开课 - 计算机科学及编程导论课程节选

You've got to make sure that if you explain to others how to do this problem, then somebody else contributes to something else, but you know what everybody contributed in the end.

你得能保证,如果你和别人解释了题目的解法,然后另一个人对别的题目又有独到见解,最后你知道每个人都没有浑水摸鱼

耶鲁公开课 - 基础物理课程节选

All right, so we've tested it, and we haven't tested it yet we have tested it but, we haven't seen it, well, you know what I'm going to do?

好，我保存下，这有点儿烦，不过能让字体更大点儿,好，我们已经得到了要比较的对象了，但是还没对它们进行比较测试？

麻省理工公开课 - 计算机科学及编程导论课程节选

But what you do know is that the story is about you.

你只知道这个故事与你息息相关。

耶鲁公开课 - 公正课程节选