名词
中文翻译：血丝
同义词：
['bloodstain', 'stain']
例句：
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1.The soldier was found with a bloodstain on his uniform.
士兵被发现穿着沾有血迹的制服。
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2. The policeman noticed the bloodstain on the floor and called for an ambulance.
警察注意到地板上的血迹，并呼叫了救护车。
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3.The victim's family was devastated by the sight of the bloodstain on the carpet.
受害者的家人看到地毯上的血迹时感到极度震惊。