Read Edit View history 循环系统 xúnhuánxìtǒng circulatory system Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 循环系统/ 循環系統 xúnhuánxìtǒng circulatory system 心脏是人体循环系统的中心。 Edit Delete References Add reference No references for this word.