feet of clay

n. 原形毕露

例句与用法：

I believed him to be honest but his actions showed that he had feet of clay.

我原以为他是个诚实的人，然而他的举动却显示出他有不为人知的缺点。

详细释义：

致命的弱点

The president had feet of clay: he drank a lot.

总裁有个致命的弱点:他好喝酒。