throw good money after bad
继续投资在无望或不明智的事情上
口语·劝诫止损
英文释义
to continue to invest or spend money on something that is already a lost cause or not worth the effort
例句
Repairing this old car is just throwing good money after bad; it's better to buy a new one.
典故来源
源自18世纪商业用语，指在亏损项目上继续投入资金，导致更大损失。