Unwanted alarms, caused mainly by faulty automatic alarm systems or their poor positioning, contributed to about 53.9 per cent of the total number of fire calls.

警钟误鸣约占火警召唤总数的53.9%，主要是由于自动警报系统失灵或安装位置欠佳而引致。

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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.

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。

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Unwanted alarms, caused mainly by faulty automatic alarm systems or poor positioning of such systems, contributed to about 66 per cent of the total number of fire calls.

警钟误鸣约占火警召唤总数的66 %，主要由于自动警报系统失灵或安装位置欠佳所致。

youdao

Unwanted alarms, caused mainly by faulty automatic alarm systems or poor positioning of such systems, contributed to about 66 per cent of the total number of fire calls.

警钟误鸣约占火警召唤总数的66 %，主要由于自动警报系统失灵或安装位置欠佳所致。

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