a flight of fancy

• 想入非非

a flight of fancy的用法和样例：

例句

1. He tried to yank his mind back out of fantasy.
   他试图将思绪从想入非非的幻梦中拉回。
2. There was a dreamy look in her mother's face.
   她母亲的脸上有着一种想入非非的神情。
3. Trust you to dream up a crazy scheme like this!
   亏你想得出这种异想天开的计划！
4. We cannot keep up with the vagaries of his mind.
   我们跟不上他的异想天开的速度。