火灾是近年来发生频率较高的一种灾害，在建筑物中安装火灾自动报警器就是预防火灾的一个重要手段。
In recent years, fire occurred in a higher frequency. Installing automatic fire detectors in buildings is an important means to prevent fires.
火灾是近年来发生频率较高的一种灾害，在建筑物中安装火灾自动报警器就是预防火灾的一个重要手段。
In recent years, fire occurred in a higher frequency. Installing automatic fire detectors in buildings is an important means to prevent fires.
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