防盗自动警铃

例句：

1. 1. The alarm clock woke us up at 5:30.
   闹钟在早上5:30叫醒了我们。
2. 2. The policeman was called to the scene of the accident.
   警察被叫到事故现场。
3. 3. The firefighters were all set for the alarm.
   消防员们都准备好了，准备应对警报。