Drones are already used to patrol the border with Mexico and now they may soon be coming to a police department near you.

无人机现已被用于巡视美墨边境，并且不久之后，也将出现于你身边的警察局。

youdao

Drones are already used to patrol the border with Mexico and now they may soon be coming to a police department near you.

无人机现已被用于巡视美墨边境，并且不久之后，也将出现于你身边的警察局。

youdao