CPR

例句：

1. 1.After the accident, he started CPR to save his friend's life.
   事故发生后，他开始进行心肺复苏以拯救朋友的生命。
2. 2.The doctor instructed him on how to perform CPR properly.
   医生教他如何正确地进行心肺复苏。
3. 3. During a medical emergency, CPR is often the first step taken by rescue workers.
   在医疗紧急情况下，心肺复苏往往是救援人员采取的第一步。