请输入您要查询的英文单词：
单词
ˌclosed-ˌcircuit teleˈvision
释义
ˌclosed-ˌcircuit teleˈvision
NOUN
C
or
ˌclosed-circuit TˈV
a system that allows someone to watch on a television screen what is happening in different parts of a building , town etc. The abbreviation CCTV is often used instead of the full word . 闭路电视（常用缩略词CCTV来代替）