smoke alarm

US /smoʊk əˈlɑːrm/
UK /smoʊk əˈlɑːrm/
"smoke alarm" picture
1.

煙霧報警器, 煙感器

a device that detects smoke and sounds an alarm, typically as a warning of fire

:
The smoke alarm went off when I burned the toast.
我烤焦麵包時,煙霧報警器響了。
Every home should have at least one working smoke alarm.
每個家庭都應該至少有一個正常工作的煙霧報警器