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1. Thesurgeon used a scalpel to remove thetumor from the patient's leg.
外科医生用一把手术刀从病人腿上切除了肿瘤。
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2. Fibrin is aprotein that helps blood clot and healwounds.
纤维蛋白是一种帮助血液凝固和愈合伤口的蛋白质。
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3. Theresearcher analyzed thefibrin in the sample todetermine its composition.
研究人员分析了样本中的纤维蛋白以确定其成分。