17.alarm n.警报器
fire alarm 火警报警器
例句：The proceedings were interrupted by the fire alarm.
会议的进程被火灾警报打断了。

18.go off （报警器）突然发出巨响
例句：The thieves ran away when the burglar alarm went off.
防盗警报器一响，盗贼立刻逃走了。

19.surface n.表面
例句：It has a rough surface.
它表面粗糙。

20.dead adj.不运作的
例句：Our radio receiver went dead.
我们的无线电接收机失灵了。

21.cough v.咳嗽
例句：She coughed herself hoarse.
她咳得嗓子都沙哑了。

22.seem v.似乎；好像
例句：She seems very happy with the new job.
她对新工作好像很满意。

23.wave v.挥手，招手；挥臂
例句：He waved the servant out of his room.
他挥手叫仆人离开房间。

24.save one’s life 救了某人的性命
例句：Better save one life than Build a seven-story pagoda
救人一命胜造七级浮屠

25.lend v.借给；借出
例句：Could you lend me your dictionary?
你能把字典借给我吗?

26.event n.重要事情；大事
例句：Winning the scholarship was a great event in the boy's life.
赢得这项奖学金是这个男孩一生中的一件大事。

27.take care 小心；留神
例句：Take care of the pence, and the pounds will take care of themselves.
小事留意,大事顺利。

28.mind v.小心；当心
例句：Mind the wet paint.
当心油漆未干。

29.look out 留神；注意
例句：FBI is on the look out for the agent these days.
这些天联邦调查局正在注意那个特工。

30.label n.标签
例句：He attached a label to his baggage.
他往行李上贴了一个标签。

31.harbor n.港口；港湾
例句：The depot near the harbor was bombed by the enemy.
港口附近的兵站被敌人炸毁了。