名词
中文翻译：静脉
同义词：
['vein', 'artery', 'blood vessel']
例句：
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1. The doctor examined the patient's veins for signs of infection.
医生检查了病人的静脉，以寻找感染的迹象。
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2. Bloodvessels are essential for carrying oxygenand nutrients to the body'scells.
血管对于将氧气和营养物质输送到身体细胞中至关重要。
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3. Thescientist discovered a new veinin the ocean floor that couldbe used for oil exploration.
科学家在海底发现了一条新的血管，可以用来进行石油勘探。