“兩敗俱傷”，漢語成語，意思是鬥爭雙方都受到損傷，誰也沒得到好處（there is no victor in the strife）。可以翻譯爲“both sides suffer/lose，或neither side gains/wins”。
例句：
在那場戰爭中他們兩敗俱傷。
Neither side gained in the war.
還是講和爲好，免得兩敗俱傷。
It would be better for both sides to make peace than to wear each other out.