19.轻敲某人后脑 tip the person’s head back slightly

18.救援即将来临　 help is on the way

17.确保呼吸道是畅通的，呼吸很容易

　make sure that a person’s airway is open and it is easy to breathe

16.受伤　 get hurt

15.首先　 first of all

14.代表　 stand for

13.推荐我们使用字母DR　ABC

　 recommend that we use the letters DR ABC

12.挽救生命　 save lives

11.怎么办　 what to do

10.保持冷静　 stay calm