alarm hammer shaft

例句：

1. 1. The alarm clock woke meup at 6:00.
   闹钟在六点把我叫醒了。
2. 2. He setoff an alarm to warn everyone ofthe impending storm.
   他启动了警报，警告大家即将到来的暴风雨。
3. 3. Thefire department was called to put out thealarm fire.
   消防队被召来扑灭警报火灾。