have feet of clay
US /hæv fiːt əv kleɪ/
UK /hæv fiːt əv kleɪ/

1.
有致命的弱點, 有隱患
to have a hidden flaw or weakness in one's character, despite outward appearances of strength or integrity
:
•
The public was shocked to learn that their revered leader, who seemed so perfect, actually had feet of clay.
公眾震驚地發現,他們那位看似完美的受人尊敬的領導人,實際上有致命的弱點。
•
Despite his impressive resume, it became clear that the new manager had feet of clay when he failed to handle the first major crisis.
儘管他的簡歷令人印象深刻,但當他未能處理第一次重大危機時,新經理有致命弱點的事實變得顯而易見。