And if you remember this phrase, I don't know why you would, but this will help you learn the lanthanides in order.

如果你能记得这句话的话，我不管你们是怎么做到的，但是这个确实会帮助你按顺序记住镧系元素。

麻省理工公开课 - 固态化学导论课程节选

That's why I think it's important to buy things that you, yourself know about and actually love,

所以我觉得要买你自己了解和真正喜欢的东西，这很重要，

关于购买艺术品 - SpeakingMax英语口语达人

And, as you know from reading the textbook, why do I mention Nora Jones?

大家在教科书里能找到,我为什么要提起诺拉·琼斯

耶鲁公开课 - 聆听音乐课程节选

The third derivative, unfortunately, was never given a name, and I don't know why.

遗憾的是三阶导数没有专门的名称,我也不知道这是为什么

耶鲁公开课 - 基础物理课程节选

I think our entertainment industry likes to make movies about people in finance, but they are inevitably portrayed as evil and I don't know why that is.

娱乐产业喜欢,制作关于金融业的电影，但里面的人物总是被刻画的很恶毒,我也不知道为什么。

耶鲁公开课 - 金融市场课程节选

And I know lots of people as well, so I can stay there. Why I shouldn't?

我也认识很多人，所以我可以留在那里。我为什么不呢？

研究生院也在这里 - SpeakingMax英语口语达人

and I don't know why I would go to his wedding now.

所以我看不出来现在我为什么要去参加他的婚礼。

I've already 实战 - SpeakingMax英语口语达人

But you agree that there is no reason why somebody else couldn't come along and say, "You know what, I want to use a different set of axes.

但是你们得认识到,没有人会站出来说,"我想要用一套不同的坐标系

耶鲁公开课 - 基础物理课程节选

Some of you are probably going to be doctors and you don't know why I'm going to do special relativity or quantum mechanics, but you don't know when it will come in handy.

你们中的有些人可能会成为医生,但你们现在不能理解,我为什么要讲相对论和量子力学,但是说不定什么时候,你就用上了呢

耶鲁公开课 - 基础物理课程节选