So if you wanna do something conditionally, you generally needs to ask the question, is the following true or false.

假如想在一定条件下做一件事情，你需要判断下这个条件，来看看条件是真还是假。

哈佛公开课 - 计算机科学课程节选

And the reason I want to show you this is to notice that the recursion can be doubled.

如果我来写斐波那契数列你可以看看这儿,原因是我想让你看看这部分的递归可以翻倍。

麻省理工公开课 - 计算机科学及编程导论课程节选

Let's see what happened, so we have Beatrice and your name is Claire Elise.

我们来看看发生了什么,比阿特丽斯和你的名字是,克莱尔·伊莉斯

耶鲁公开课 - 博弈论课程节选

Let's look at how you work as the president's gatekeeper.

现在我们来看看,作为总统的主管你是怎么工作的。

普林斯顿公开课 - 国际座谈会课程节选

This is going to be a little bit of a stretch for imagination, but imagination yourself as a Roman general, and let's figure out what you're going to do.

发挥你的想象力,想象你是一位罗马将军,我们来看看你应该怎么办

耶鲁公开课 - 博弈论课程节选