她在捣什么鬼？

What's she up to?

《牛津词典》

除非你要捣什么鬼，不然为什么需要一个房间呢？

Why did you need a room unless you were up to something?

《柯林斯英汉双解大词典》

你到底在上面捣什么鬼？

What the devil are you doing up here?

youdao

孩子们现在很安静；我不知道他们又在捣什么鬼。

The children are very quiet. I wonder what they are up to.

youdao

有一段时间，我怀疑也许是汤米在背后捣了什么鬼。但是一遇到这样忙乱的日子，我所能做的就只有专注于自己手上的活儿，根本没有时间再去盯着他。

For a while I toyed with the idea that Tommy was behind it somehow, but on those chaotic days all I could do was keep track of myself, never mind watching him.

youdao

我想起来，课前，不知道什么事，红兵曾一闪身进了办公室——原来是他捣的鬼！

I realized why he slipped into the office oddly before the class — It was nothing but his tricks!

youdao

我想起来，课前，不知道什么事，红兵曾一闪身进了办公室——原来是他捣的鬼！

I realized why he slipped into the office oddly before the class — It was nothing but his tricks!

youdao