They installed a surveillance TV against those shoplifters. Contains electronic surveillance equipment, closed-circuit televisions, recording devices, and covert video equipment for surveillance systems and security control monitoring. 他们安了监测电视来监视那些顺手牵羊者。包含用于监视系统和安全控制监控的电子监视设备、闭路电视、录音设备和隐蔽视频设备。