1.I'm surprised. I knew she was a bit dotty, but I didn't think it was that serious.

真吗？我道她有点神经，道有那么严重。

2.' She's dotty as a doughnut, George thought.

’她像个甜甜圈一样神经，乔治想。机翻

3.They seemed to have gone completely dotty, all four of them.

他们似乎已经完全疯了，他们四个。机翻