Or if someone's as mad as a hatter?

或者有人疯疯癫癫的？

" He must be as mad as a hatter, " exclaimed the Colonel.

" 这人简直神经失常了，" 上校大声说。

OK, the next idiom: as mad as a hatter.

好了，下一个习语：疯疯癫癫。

So if someone is behaving in a crazy way, you can say they're as mad as a hatter.

所以，如果某人的行为很疯狂，你可以说他们疯疯癫癫的。

The expression mad as a Hatter also means to be completely crazy. Of the two, mad as a Hatter is more common.

短语" mad as a Hatter" 的意思也是彻底疯了。这两个短语，" mad as a Hatter" 更为常用。

So to keep you from running around as mad as a hatter or anxiously dwelling on what you might be forgetting to do - make a checklist.

所以，为了不让你像疯帽子一样跑来跑去，或者焦虑地纠结于你可能会忘记做什么——就去做一个清单。

The phrase " mad as a hatter" was actually used to describe industrial hat-makers in the mid-1800s, who were poisoned by mercury just by doing their jobs.

“像帽匠一样疯狂”这句话实际上是用来描述 1800 年代中期的工业制帽商，他们只是在工作时就被汞毒害了。

" I honestly don't know. Sometimes, I feel sure he is as mad as a hatter; and then, just as he is at his maddest, I find there is method in his madness" .

“老实说，我不知道。有时，我确信他像帽匠一样疯狂； 然后，就在他最疯狂的时候， 我发现他的疯狂是有方法的” 。