One or more loud speakers in the region can be used to communicate a preferred evacuation route to individuals in the region.
该区中的一个或多个扩音器能用于向该区中的个人传达优选撤离路线。
One or more loud speakers in the region can be used to communicate a preferred evacuation route to individuals in the region.
该区中的一个或多个扩音器能用于向该区中的个人传达优选撤离路线。
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