car alarm

car alarm读音音标

英 [kɑ: əˈlɑ:m]

美 [kɑr əˈlɑrm]

car alarm意思解释

n.

汽车报警器；

变形

复数：car alarms

英英释义

A car alarm is an electronic device installed in a vehicle in an attempt to discourage theft of the vehicle itself, its contents, or both. Car alarms work by emitting high-volume sound (usually a siren, klaxon, pre-recorded verbal warning, the vehicle\'s own horn, or a combination thereof) when the conditions necessary for triggering are met, as well as by flashing some of the vehicle\'s lights, and (optionally) notifying the car\'s owner via a paging system and interrupting various electrical circuits necessary for the car to start.