The second student explained, "What are you talking about?"

第二个学生解释说：“你在说什么？”

youdao

What are you talking about?

你在说什么？

youdao

Well, what are you talking about?

恶， 是何言也?

《新英汉大辞典》

I don't even know what you're... How... What are you talking about?You want me to go away? I can't...

VOA: standard.other

When we're talking about breathing meditation, what do we really mean, what are the instructions either you have received or given in your group or when you led our Thursday meeting.

当我们说到呼吸冥想修行时时，我们本意何在，你们从小组活动中,都得到或给予过哪些指点呢,不然就是在组织周四活动时。

普林斯顿公开课 - 人性课程节选

Incidentally, I mentioned this last time-- I was talking about-- I was philosophizing about wealth and I asked what are you going to do with a billion dollars.

顺便提一句,最后提一次,我在讲,我在探讨财富,我在讲如果你有一百万美元你会做什么

耶鲁公开课 - 金融市场课程节选

So I guess the question is just this disingenuousness that, no, what are you talking about?

WHITEHOUSE: Press Briefing

And then their bosses are having to say, what are you talking about?

WHITEHOUSE: Remarks by the President in Lima, OH

And it's just because of the way I've been raised as far as church and people would look at me like, you know, what are you talking about?

NPR: The Sheards: A Mother-Daughter Gospel Duo