在某些GPS地图不能使用的区域，领队汽车会通过收音机将路线通知给其他车辆。
When GPS maps were unavailable in certain areas, the lead vehicle communicated the route to the other vans via radio.
在某些GPS地图不能使用的区域，领队汽车会通过收音机将路线通知给其他车辆。
When GPS maps were unavailable in certain areas, the lead vehicle communicated the route to the other vans via radio.
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