fire alarm

名词 fire alarm:

1. a shout or bell to warn that fire has broken out
2. an alarm that is tripped off by fire or smoke
   同义词：smoke alarm

1. The proceedings were interrupted by the fire alarm.
   会议的进程被火灾警报打断了。
2. The people poured back into the building when they head the fire alarm.
   一听到火警警报，人们就纷纷涌回到大楼里。
3. Where's the fire alarm?
   火警的警铃在哪 ?