他们讲的是什么语？

What language is it they're speaking?

《牛津词典》

那么散度定理究竟讲的是什么？

So, what does the divergence theorem say?

youdao

能给谈谈你的新影片讲的是什么吗？

Could you tell me what your new film is about?

youdao

And what you might have noted is although we described how to make predictions about these properties, I didn't talk too much about what it actually means, what the ramifications of these different properties are.

而大家可能已经注意到了我们描述了,如何对这些性质进行预言，但是我并没有讲这到底有什么意义，这些不同性质的分支是什么。

麻省理工公开课 - 化学原理课程节选

There are only three assignments: two six-page papers, that I'll explain how to do. One is a exegesis paper, and we'll spend a whole section discussion talking about what we mean by exegesis and teaching you how to do it.

有三项作业：2篇6页论文，我会讲具体要求的，一篇是注释论文，我们花一整节讨论课,讲什么是注释，如何写注释论文。

耶鲁公开课 - 新约课程节选

I was curious; I was even a user assistant at the time, I was certainly a geek at the time and yet I had no sense really of what actually went on in a classroom like this.

我很好奇，在当时我是一名助教，那时我肯定是一个怪胎,我真的不知道,这样的课上讲的是什么东西。

哈佛公开课 - 计算机科学课程节选