哎，拿定主意。你要哪一个？这个还是那个？

Well, make up your mind. Which do you want? This one or that one?

《牛津词典》

你要转动这个手柄来操纵活动天窗。

You operate the trapdoor by winding this handle.

《牛津词典》

这种吸血鬼的能量会耗尽，这就是为什么你要考虑这个朋友是否值得继续交往。

This energy of the vampire can be draining, which is why you should consider if this friend is worth keeping.

youdao

And the first thing you do is ask is it an instance of some problem that other people have already solved?

而且你以前从没碰过这个问题,你首先要做的一件事就是问问自己,这是不是一个别人已经解决了的问题？

麻省理工公开课 - 计算机科学及编程导论课程节选

It's great for showing that you've already expressed something and you want to emphasize that point to you are conversant.

在表明你已经表达过某个观点并且想要再次强调的时候，这个句型非常有用。

That's what课堂 - SpeakingMax英语口语达人

It is what you profess. Well, the thesis is also, another way to think of it, an answer to a question.

它就是你要表达的东西，这个论文也是，另一种思考它的方式，关于一个问题的答案。

麻省理工公开课 - 固态化学导论课程节选