消防人员举行了857次防火讲座，并辅以展览及示范，听众来自社会各阶层。
Fire officers gave 857 fire prevention talks to people from different sectors of the community. They were supplemented by exhibitions and demonstrations.
消防人员举行了857次防火讲座，并辅以展览及示范，听众来自社会各阶层。
Fire officers gave 857 fire prevention talks to people from different sectors of the community. They were supplemented by exhibitions and demonstrations.
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