Who set off the fire alarm?谁拉响了火警报警器？Then the fire alarm went off. I just grabbed my clothes and ran out.当时火险警报器响了，我一把抓起衣服就往外跑。It was thought that the fire alarm had been set off as a prank.人们认为火警报警器响是个恶作剧....

fire alarm的音标：fire alarm的英式发音音标为：['faiə ə'lɑ:m]fire alarm的美式发音音标为：[faɪr ə'lɑrm]...

n.火警，报火机，警钟...

fire alarm的复数形式为：fire alarms...