◎ 以子之矛,攻子之盾 yǐ zǐ zhī máo,gōng zǐ zhī dùn[Turn sb's battery against himself;Fight sb.with his own weapon] 用你自己的矛来刺你自己的盾。比喻用对方的论点来驳斥对方 -----------------国语辞典:比喻以对方的观点、理论来反驳对方。语本《韩非子.难一》:「楚人有鬻楯与矛者,誉之曰:『吾楯之坚,物莫能陷也。』又誉其矛曰:『吾矛之利,于物无不陷也。』或曰:『以子之矛,陷子之楯何如?其人弗能应也。』」英语 lit. use sb's spear to attack his shield (idiom, derived from Han Feizi 韓非子|韩非子); turning a weapon against its owner, fig. to attack an opponent using his own devices, hoist with his own petard