To fight a bloody battle with great courage and determination.
形容顽强地拼死战斗。
杜鹏程《保卫延安》第六章一战士们在这十五昼十五夜中，不是浴血奋战就是急行军转移。”
The soldiers were determined to fight to the end, bathing in blood if needed.
Learn the next connected idiom: 浴血奋战 (yù xuè fèn zhàn) → 战火纷飞 (zhàn huǒ fēn fēi)
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