18.学会如何自我保护　 learn how to protect oneself

17.鼓励某人做某事　 encourage sb to do

16.有机会做某事　 have a chance to do

15.非常昂贵　 much too expensive

14.缺乏适当的医疗保健　 a lick of proper health care

13.受感染儿童的总数

　 the total number of infected children

12.想念她的母亲　 miss her mother

11.照顾，照看　 take care of

10.至于，就…来说　 as in one’s case

9.破坏人体的免役系统　

break down the body’s immune system