后车之鉴 / 後車之鑒

hòu​chē​zhī​jiàn

cautionary lesson

A warning or lesson derived from the failures of those who came before; learning from past mistakes to avoid repeating them.

我们应当把这次失败当作后车之鉴，以免以后重蹈覆辙。

idiom

created sense Mar 4, 2026, 02:25 AM