如果不先讲民间故事，我们就不能讲童话因为这两种类型的故事之间有很强的联系。

Now we can't really talk about fairy tales without first talking about folktales because there's a strong connection between these two genres, these two types of stories.

youdao

那么，我们要先讲完周期性规律。

So, we need to finish up with periodic trends.

youdao

噢！我为什么不把一切先讲给您听呢？

Oh, why did I not tell you all?

youdao

What in the world does that have to do with my divisor example? Well, actually, before I do that let me in fact fill in a piece here.

那么这到底跟我的除数的例子有什么关系呢？,好，实际上，在我讲之前请我先来补充一点，大家还记得我说过,我们可以概念上认为。

麻省理工公开课 - 计算机科学及编程导论课程节选

Let me tell you two stories that might-- well, look, before I tell you the stories here's the other side.

让我告诉你们两个故事-,在我讲故事之前,先讲下另一面。

耶鲁公开课 - 死亡课程节选

We'll come back to that in a second, but let me make a different remark before we get there.

我们待会回来讲它,我先讲另一个要点

耶鲁公开课 - 博弈论课程节选