His family is not very well off.

他家境不太宽裕。

I've got my own room so I'm well off.

我有自己的房间，所以还不错。

So was your father's side more well off?

那么你父亲那边的亲戚以前更富裕？

Some people don't know when they're well off.

有些人身在福中不知福。

They are only interested in preserving the power of the privileged and the well off.

他们只对保护特权阶层和富人的权力感兴趣。