pulsation source

例句：

1. 1. The pulse of the heart is a key indicator of health.
   心脏的脉搏是健康的关键指标。
2. 2.The pulsation source in the artery is responsible for delivering oxygen to the body.
   动脉中的脉动源负责向身体输送氧气。
3. 3. The pulsation source in the vein is responsible for carrying away waste products from the body.
   静脉中的脉动源负责将废物从身体中带走。