fire alarm
US /ˈfaɪər əˌlɑːrm/
UK /ˈfaɪər əˌlɑːrm/
1.
火警, 火灾报警器
a device that makes a loud noise to warn people of a fire
:
•
The fire alarm went off, and everyone evacuated the building.
火警响了，所有人都撤离了大楼。
•
Always check if the fire alarm is working properly.
务必检查火警是否正常工作。