pulse time division multiplex

例句：

1. 1. The doctor checked her pulse to make sure she was still breathing.
   医生检查了她的脉搏，以确保她仍然在呼吸。
2. 2. He felt a sudden surge of energy and his pulse quickened.
   他感到一股突然的活力激增，他的脉搏加快了。
3. 3. Her heart raced as she waited for the results of the test.
   她在等待测试结果时心跳加速。