Definition
Used to express a firm determination to accomplish something, regardless of any difficulties or obstacles that may arise.
即使千辛萬苦，也必須……
I will finish this report by the deadline, come hell or high water.
我一定會在截止日期前完成這份報告，無論遇到什麼困難。
They are determined to make this project a success, come hell or high water.
他們決心讓這個專案成功，無論遇到什麼困難。
She vowed to get that degree, come hell or high water.
她發誓要拿到那個學位，無論遇到什麼困難。