M-1：mad as a hatter 发疯
A:You don't mind Susan, do you?
A:你不会介意苏珊，是吗？
B:She is as mad as a hatter.
B：她有点疯疯癫癫的。
A:But she is quite harmless, you know.
A：但你知道的，她完全没有恶意。
B:Just because of this, I still get along with her.
B:就是因为这点，我才仍然和她相处。
A:She is extremely clever, too.
A：她人很聪明。
