英语每日一句：你做这一切到底怎么想的？

What's the idea of all this?

你做这一切到底怎么想的？

语言点：这里的"what's the idea"带有"What foolishness do you have in mind?"的意味，又如：What's the idea of taking the car without permission? 没经允许就把车拿来，你到底怎么想的？