Nearly half would be a so-called "virtual fence" utilizing high technology sensors and cameras as well as special deployments of Border Patrol agents.
将近一半是所谓的“虚拟围墙”，使用高科技传感器和照相机以及特别部署边界巡逻队的警卫。
Nearly half would be a so-called "virtual fence" utilizing high technology sensors and cameras as well as special deployments of Border Patrol agents.
将近一半是所谓的“虚拟围墙”，使用高科技传感器和照相机以及特别部署边界巡逻队的警卫。
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