So let's go to a second clicker question here and try one more. So why don't you tell me how many possible orbitals you can have in a single atom that have the following two quantum numbers?

让我们来看下一道题目,你们来告诉我,有多少个可能的轨道,含有这些量子数呢？

麻省理工公开课 - 化学原理课程节选

and got a couple of compliments on my pictures, so figured, "Why not try this?"

然后照片受了点表扬，我就想“干嘛不试试这一行呢？”

拍照的理由 - SpeakingMax英语口语达人

And there's a lot of significance in that, I think, and I'll try to explain why.

我认为这一点至关重要，我会告诉你们原因。

耶鲁公开课 - 文学理论导论课程节选

If you try to imagine a smile with no body at all, it can't be done. Why?

如果你要相信一个没有身体的微笑,那是根本做不到的 为什么呢

耶鲁公开课 - 死亡课程节选