短语 to keep your head above water 可以用来形容某人虽然手头比较紧，但还可以勉强维持。

例句

Our company isn't doing very well but we're just about keeping our head above water.

I'm struggling to pay the bills; I don't know if I can keep my head above water.

请注意

短语 to be in deep water 的意思是陷入困境。

We're going to be in deep water if someone finds out that we broke that window.