例句：
I am a seeker after truth.
我是一名真理的追求者。
After the revolution, anarchy ruled.
革命以后，无政府主义大行其道。
She died shortly after giving birth.
她生下孩子后不久便死了。
What's the idea behind this?
这背后的意图是什么？
The sun went behind a cloud.
太阳躲在了一朵云的'后面。
He crouched behind a low hedgerow.
他蹲在一排低矮的灌木篱后面。