以ㄧˇyǐ夷ㄧˊyí制ㄓˋzhì夷ㄧˊyí

  1. 利用外族或外國之間的矛盾，使其互相衝突，削減力量，以便控制或攻伐。也作「以夷伐夷」、「以夷治夷」。

  2. 學習他國的長處，來克制他國。

英to use foreigners to subdue foreigners (idiom)​; let the barbarians fight it out among themselves (traditional policy of successive dynasties)​, Use Western science and technology to counter imperialist encroachment. (late Qing modernizing slogan)​