名词
中文翻译：火灾探测器
同义词：
['fire alarm', 'fire detection system', 'fire sensor']
例句：
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1. The firedetectors are installed in every room to prevent fires.
在每个房间都安装了火灾探测器，以防止火灾。
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2. The fire detectors can detect smoke and sound an alarm.
火灾探测器可以检测到烟雾并发出警报。
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3. The fire detectors were designed to alert people of a fire before it spreads.
这些火灾探测器被设计成在火势蔓延之前就能警告人们。