警钟误鸣约占火警召唤总数的56 。 9 % ，主要是由于自动警报系统失灵或安装位置欠佳而引致。
Unwanted alarms , caused mainly by faulty automatic alarm systems or their poor positioning , contributed to about 56 . 9 per cent of the total number of fire calls.
火警演习期间，消防警钟将会间歇性鸣响约十秒，如贵户不参加是次演习，请保持镇定及无须理会。
The fire alarm bell will be sounded intermittently during the fire drill. Please remain clam should you not participate in this event.
他当当敲击火警钟。
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