... fire hazard 火警危险 fire warning device 火灾警报装置 fireproofing 防火设施 ...
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automatic fire warning device 火警自动报警装置
wall fire warning device 墙上火警装置
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Smith says that one test in the U.K. found 80% of time, people would surrender after seeing the warning arc, without an officer actually having to fire the device.
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