n. an animating or vital unifying force
n. 心跳
1. I can hear my heartbeat when I exercise.
我运动时能听到自己的心跳。
2. The doctor checked my heartbeat during the check-up.
医生在检查时检查了我的心跳。
3. Her heartbeat quickened when she saw the surprise party.
当她看到惊喜派对时，她的心跳加速了。