片语
CCTV CLOSED-CIRCUIT TELEVISION闭路电视
closed-circuit television monitor闭路电视监察器
closed-circuit television camera闭路电视摄像机
closed-circuit television controller闭路电视控制器
closed-circuit television teaching闭路电视教学
Closed-circuit television EEG闭路电视脑电图
campus closed-circuit television校因闭路电视网
Closed-circuit Instructional Television闭路教学电视
a closed-circuit television闭路电视