closed-circuit television

名词 n.
中文释义

英文释义

名词 n.
  1. A system of television cameras, connected by cable to a control room, used for surveillance. countable,uncountable
    — Holborn Underground Station, on London Transport's Piccadilly and Central Lines, has been equipped with closed-circuit television to help control passenger movement.

词形变化

closed-circuit televisions plural
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