1.bend back 扭转
Well, bend it back or tell me what the hell i'm doing here.
把它变回去，或者告诉我到底来这干嘛。

2.catching on 变得流行
It'll never catch on in libraries.
这种方式决不会在图书馆流行。

3.pie in the sky 空想的计划
His plans for converting his house into an antique shop are just pie in the sky.
他想把他的房子改造成一个古玩店，那种计划只不过是空想而已。