come hell or high water
不管发生什么事，无论遇到什么困难
口语·用于表达坚定决心
英文释义
no matter what happens or what difficulties are encountered; regardless of the obstacles or challenges that may arise
例句
I'll finish this project come hell or high water.
典故来源
源自19世纪美国西部，hell和high water分别代表极端危险和洪水，强调决心。