名词
中文翻译：循环系统
同义词：
['circulatory system', 'cardiovascular system例句：1. The heart is the primary organ of the cardiocirculatory system.（心脏是循环系统的主器官。）']
例句：
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1. The heart is the primary organ of the cardiocirculatory system.
心脏是循环系统的主器官。
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2. Cardiovascular diseases are a major cause of death worldwide.
心血管疾病是全球死亡的主要原因。
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3. The study focused on the relationship between exercise and the cardiocirculatory system.
这项研究关注了运动与心血管系统之间的关系。