I just can't live hand to mouth, it's too frightening.

我就是不能过勉强糊口的日子，这太可怕了。

Unloved and uncared-for, they live a meaningless hand to mouth existence.

没人疼爱也没人照顾，他们过着一种毫无意义、勉强糊口的日子。

I have a wife and two children and we live from hand to mouth on what I earn.

我有妻子和两个孩子，我们靠我挣的钱勉强糊口。

They can only live from hand to mouth.

他们的日子是只能糊口。

He lived from hand to mouth at that time.

那时他只能勉强过活。