實(shí)用口語:如何說"致命弱點(diǎn)"

One's Achilles' heel（致命弱點(diǎn)）
    Weak or vulnerable point; fault, esp in sb's character, which can lead to his downfall.
    致命弱點(diǎn)；（尤指某人個(gè)性中可導(dǎo)致一敗涂地的）缺陷。
    關(guān)于Ahilles：
    【希神】阿基里斯（除腳踵外，渾身刀槍不入）
    When Ahilles was an infant, his mother tried to make him immortal by bathing him in a magical river.
    當(dāng)阿基里斯還是嬰兒時(shí)，其母親為了使他永生而在神秘河里為他洗澡。
    請(qǐng)看例句：
    Vanity is his Achilles' heel.
    虛榮自負(fù)是他的致命傷。