The fire-alarm kept jangling .
火警报警器响个不停.
A box containing a fire alarm.
火警匣装有火警报警器的盒子
I was coming close to the office when the fire alarm sounded.
我正走近办公室，这时火警报警器响了。
Just then, the fire alarm went off.
就在那时，火警报警器突然发生巨响。
The fire alarm was accidentally set off.
火警报警器不小心给弄响了。
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。
automatic thermo type fire alarm
测温式火警自动报警器
general fire alarm control unit
通用火灾报警控制器
single zone fire alarm control unit
单路火灾报警控制器
central fire alarm control
集中火灾报警控制器
multiple loop fire alarm control unit
多路火灾报警控制器
combination burglar alarm and fire alarm
防火防盗复合报警器
automatic smoke type fire alarm
测烟式失火自动报警器
he ducked at the screechings of shells; he heard the scream of the brakes.
救火车警报器的尖叫声。
It was the fire alarm.
这是一个救火警报器。
Firefly Personal Alert Safety System
萤火个人安全警报器
Firefly K Personal Alert Safety System
萤火Ｋ个人安全警报器
interconnected fire alarm control unit
互连火灾报警控制器