N-UNCOUNT 电子追踪（指通过在罪犯或嫌疑犯身上安装电子装置以确定其行踪的方法） Electronic tagging is a system in which a criminal or suspected criminal has an electronic device attached to them which enables the police to know if they leave a particular area. 电子追踪（指通过在罪犯或嫌疑犯身上安装电子装置以确定其行踪的方法） [British]