Fearing arrest, they took flight and hid in the mountains.因害怕被捕，他们逃走并躲在山里。

The bird took flight [=took wing] when we tried to approach it.当我们试图靠近那只鸟时，它飞了起来。

The idea really took flight [=took off] and soon it seemed everyone was copying it.这个主意真的奏效了，很快地，好像每个人都开始效仿。