名词
中文翻译：血
同义词：
['blood', 'blood vessels', 'venous system']
例句：
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1. The doctor said that he needed to have a heart bypass surgery.
医生说他需要进行心脏搭桥手术。
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2. Blood tests can help doctors diagnose diseases and monitor patients' health.
血液测试可以帮助医生诊断疾病和监测患者的健康状况。
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3. He was in the hospital for several days after his operation.
他在手术后住院了几天。