a mythical Greek hero of the Iliad; a foremost Greek warrior at the siege of Troy; when he was a baby his mother tried to make him immortal by bathing him in a magical river but the heel by which she held him remained vulnerable--his `Achilles' heel'
Achilles的用法和樣例:
例句
He would have made a good pilot but his drinking habit was his Achilles』 heel. 他本來會成為一名很好的飛行員,不過他的飲酒習慣卻成了他的致命弱點。