拼音yù bàng xiāng zhēng，yú wēng dé lì
注音ㄩˋ ㄅㄤˋ ㄒ一ㄤ ㄓㄥ，ㄩˊ ㄨㄥ ㄉㄜˊ ㄌ一ˋ
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比喻双方争利、互不相让，结果两败俱伤，反而使第三者得利。
英two dogs fight for a bone, and a third runs aways with it; Parties in a quarrel are both losers;