Cardiovascular system
01
心血管系统, 循环系统
a complex network of the heart, blood, and blood vessels that transports oxygen, nutrients, and hormones to cells throughout the body and removes waste products
语法信息
有生性状态
无生命
形态构成
复合词
不可数
例子
Blood vessels are in the cardiovascular system.
血管位于心血管系统中。



























