He sensibly decided to lie low for a while.

他明智地决定先躲避一段时间。

He had to lie low for a while.

他不得不躲起来一段时间。

Until the dispute is settled, you'd better lie low.

争论结束之前，你最好是等待时机。

He'll lie low and pretend he knows nothing about it.

他不会不吭声，假装什么也不知道。