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
例子
The cardiovascular system keeps us alive.
心血管系统维持我们的生命。
Blood vessels are in the cardiovascular system.
血管位于心血管系统中。
