什么是CPR？ 就是心肺复苏，什么？还不知道，那你赶紧看看下文吧
Cardiopulmonary resuscitation, or CPR, can save the life of someone whose heart has stopped. The condition is called cardiac arrest. The heart stops pumping blood. The person stops breathing. Without lifesaving measures, the brain starts to die within 4 to 6…