随着年龄的增加，人在消耗体力时心脏的输血能力和输血速度会有所减弱。Age diminishes the heart's ability to pump harder and faster under exertion.交感神经纤维分布于心脏的所有部分.Sympathetic fibers are distributed to all regions of the heart.心脏的功能是把血液输往全身.The function...

“心脏的”的英语可以翻译为：cardiac，cordis ...