you know better than that
你應該知道得更好
口語·責備或失望
英文釋義
to express disbelief or disappointment in someone's actions, implying that they should have known or done something differently
例句
You left your bike unlocked again? You know better than that in this neighborhood.
典故來源
源自19世紀英語口語,強調對方本應有常識或判斷力,卻做了不該做的事。