smoke alarm
noun [ C ] uk/ˈsməʊk əˌlɑːm/ us/ˈsmoʊk əˌlɑːrm/
烟雾报警器
a device that makes a loud noise when there is smoke present to tell people that there is a fire
Smoking a cigarette will not normally set off a smoke alarm . 抽烟一般不会触发烟雾报警器。
A survivor said that smoke alarms had failed to go off. 幸存者说到烟雾报警器失灵了。
Synonym: smoke detector
- More examples
- Despite two smoke alarms sounding he failed to wake up.
- A working smoke alarm can significantly increase your chances of survival in the event of a fire.
- Most smoke alarms have a test button which sets off the alarm when pressed.