Does anyone have that in their brain somewhere for ready use? I don't, in fact, so it's actually okay if you don't know all your common ions, if you missed that part.

你们有谁有印象它们有什么用吗？,我当时是不知道，所以如果你们不记得,这部分也没有关系。

麻省理工公开课 - 化学原理课程节选

I don't know, there's this... if you don't like to skate, like the parks,

我不知道，有这个……如果你不喜欢滑冰，在公园

滑板的魅力 - SpeakingMax英语口语达人

They really don't.So, if everybody masters the material A I can say A's on the house.

他们真的不知道，如果每个人都掌握了知识,那么我敢说，人人可得。

麻省理工公开课 - 固态化学导论课程节选

I don't know. If you've ever seen a movie - well, there are lots of movies that do this; one of the first movies that did this was "Who Killed Roger Rabbit?"

我不知道，如果你们看过那部电影,当然，有很多电影都描写过这一点，其中一部较早的,电影表现了这一手法--《谁谋杀了兔子罗杰》

耶鲁公开课 - 弥尔顿课程节选

So each of these cups again have different weights if I want to find the lightest of them I might start not knowing which is which.

它们的重量互不相同，如果我要,找出最轻的一个，而我根本不知道会是,哪一个。

哈佛公开课 - 计算机科学课程节选

You played the game; I don't know if there's a videogame now, if people play games like this where London Bridge is Falling Down.

你们也玩过这个游戏吧,我不知道现在是不是有电子游戏了,如果有人玩过伦敦桥这个游戏

耶鲁公开课 - 生物医学工程探索课程节选

Now many of you may have heard, many of you may know, and if you don't already know this, I should warn you, that I have a reputation around Yale as being a harsh grader.

你们中的大多数可能听说过，你们中的一部分可能知道，如果你真的不知道，那么我要警告你，我在耶鲁,是出了名的严厉。

耶鲁公开课 - 死亡课程节选

If you look at Greece in this period, I don't know if I've used this term before, but some scholars refer to this general period we're talking about as the Greek renaissance by analogy to the renaissance in Italy.

如果纵观这个时期的希腊,我不知道以前是否用过这个定义,但一些学者,用意大利文艺复兴来比喻这个时期,把它称作希腊的文艺复兴

耶鲁公开课 - 古希腊历史简介课程节选

So it might look like here, if you don't understand about p orbitals, which I know all you do, but if someone else was just looking and seeing, it kind of looks like there's two bonds here.

这里看起来有点像，如果你们不知道p轨道的话，我知道你们都知道，但如果另外有个人看到这个，这看起来有点像两个键。

麻省理工公开课 - 化学原理课程节选

I don't know what the average would be if I chose a different bias.

我不知道如果我选择别的平均值的话,平均值会是多少。

麻省理工公开课 - 计算机科学及编程导论课程节选

which I don't know if it's a talent. But, if people enjoy it...

我不知道这算不算有才。但是，如果人们喜欢这个……

英国的真人秀 - SpeakingMax英语口语达人

If you don't give me seven hours a week, I don't know what I can do for you.

如果你们一周不学习7个小时，我不知道我能为你们做什么了。

麻省理工公开课 - 固态化学导论课程节选

But if you say, well, I don't know how to do this, I am not going to bother, don't grade the paper.

但是如果你说，好吧，我不知道怎么做这个，我想麻烦，别给试卷评分。

麻省理工公开课 - 固态化学导论课程节选

I don't exactly know where they are in RAM, but I know if I've got 2 gigabytes of RAM, zero is here, byte 1 is here, byte 2 is here, dot, dot, dot so maybe byte 123 is over here and 456 is here.

我不知道他们在内存中哪个地方，但是我知道如果我有2G内存，零在这里，字节1在这里，字节2在这里，等等等，所以可能123字节在这里，456字节在这里。

哈佛公开课 - 计算机科学课程节选

I don't know, John, if you'd agree, right?

我不知道，John，如果你同意，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

So, if you by chance, I know it's very rare, but if by chance you don't get the class you can always follow up later.

如果你们偶然，我知道不太可能，但是如果不小心你们错过了某节课,你们就可以在之后补回来了。

麻省理工公开课 - 固态化学导论课程节选