closed-circuit

基本解釋

There has been criticism that, like metal detectors, many closed-circuit cameras don't work or go unmonitored.
有人批評說，如金屬探測器、許多閉路攝像機都不能正常工作或去監(jiān)測。
The demand for access to the sentencing were so high that two additional rooms were provided for defrauded investors, media and spectators to watch on closed-circuit television.
由于要求出席審判的人太多，以至于不得不額外提供兩個房間給受騙的投資人、媒體和觀眾去觀看閉路電視。
But on Monday, journalists previously barred from the court property were permitted to watch the final proceedings by closed-circuit television from a courtroom annex.
但周一時，此前被禁止踏入法院的記者獲準來到法院七層的一間屋子，通過閉路電視收看宣判的情景。

Lead surgeon Dr.Antonio Alcaraz instructs fellow surgeons and students watching the procedure through closed-circuit television.

The use of automated closed-circuit surveillance cameras is proving effective in deterring urban street crime.
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Chen said he heard Meng make the pledge at a conference carried on closed-circuit television.
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A closed-circuit television or video system is one that operates within a limited area such as a building.