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比喻继续打击已经失败的坏人。
[beat a drowning dog;(fig) completely crush a defeated enemy;beat the mad dog even through it is already in the water]∶已经落水的狗也必须坚决打击。比喻要彻底打跨处于失败地位的凶恶敌人。也指不能放过已失势的坏人。“落水狗”。比喻受到重大打击的凶恶的坏人或敌人