pulse 8 positioning system

例句：

1. 1. He felt a sudden surge of energy as his heart began to pulse.
   他的心脏开始跳动时，他感到一阵突然的活力。
2. 2. The doctor checked her pulse and took her blood pressure.
   医生检查了她的脉搏和血压。
3. 3. She was in a state of shock, with her pulse racing at 90 beats perminute.
   她处于休克状态，脉搏每分钟跳90次。