但教育不学以致用，那又是什么呢？

But if education is not useful, what is it?

youdao

K-T分界线灰烬的不是燃烧的森林，那又是什么呢？

So if burning forests didn't create the K-T boundary soot, what did?

youdao

问：如果肥胖的根本原因不是暴饮暴食，那又是什么呢？

Q. If it's not overeating, then what is the underlying cause of obesity?

youdao

Well, I've got part of what I want for abstraction Abstraction, again, says I'm going to suppress details.

那抽象又是什么呢？,我在这里准备了一点想要抽象东西,抽象，再说一次。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now that you're adults and you've gone through all the developmental stages, where do you stand?

现在你成年了,经历了所有的发展阶段，那你现在又是处于什么阶段呢？

耶鲁公开课 - 心理学导论课程节选

What do I mean by a handled exception?

那可处理的异常又是什么意思呢？

麻省理工公开课 - 计算机科学及编程导论课程节选