名词
中文翻译：Unknown
同义词：
['injury', 'wound', 'injury', 'contusion', 'hemorrhage']
例句：
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1. Hesustained a serious ulcer on his leg and had to be hospitalized for treatment.
他的腿受了严重的溃疡，不得不住院治疗。
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2. The patient was in a lot of pain due to the internal bleeding.
由于内部出血，病人非常疼痛。
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3.The soldier received a puncture wound during the battle, which led to an internal hemorrhage.
士兵在战斗中被刺伤，导致内部出血。