“keep your head above water”不仅指“让头在水面之上”，还是（尤指财务上）勉强应付过去，惨淡经营。

【例句】
The business is in trouble, but we are just about keeping our heads above water.
公司遇到了一些问题，但我们还得勉强应付下去。

The company had great difficulty keeping its head above water during the economic crisis.
在经济危机期间，公司有巨大的困难让它能勉强应付过去。