closed circuit

closed circuit的音标是[ˈkləʊst ˈsɜːk(ə)l]，基本翻译是闭路，也指闭路电视。速记技巧是将其分解为单词的组成部分并使用符号代替某些字符。

Closed Circuit的英文词源是close和circuit，意为“闭合电路”。它的变化形式主要有复数形式closed circuits，过去式closed the circuit，过去分词closed the circuit等。

相关单词：

loop：意为“环，回路”，其词源同circuit同源，表示闭合的路径。

self-circuit：意为“自回路”，即自我连接。

open circuit：意为“开路，断路”，与closed circuit相反，表示电路没有连接。

circuit breaker：意为“断路器”，是一种能够自动切断电路的设备。

circuitous：意为“迂回的，曲折的”，其词源表示曲折的路径。

serial circuit：意为“串联电路”，是由电阻、电容、电感等元件按照串连的方式连接而成的电路。

circuit board：意为“电路板”，是电子设备中用于承载电路的板子。

motor circuit：意为“马达电路”，是用于控制马达工作的电路。

power circuit：意为“电源电路”，是提供电源的电路。这些单词都与电路和电子有关。

常用短语：

1. closed circuit television (CCTV)

2. closed circuit broadcast

3. closed circuit control

4. closed circuit recording

5. closed circuit operator

6. closed circuit advertising

7. closed circuit access

例句：

1. The security camera is monitoring the closed circuit to ensure safety.

2. The broadcast was transmitted to all closed circuit receivers.

3. The control panel allows the operator to operate the closed circuit system.

4. The recording device is used for closed circuit recording.

5. The operator must be certified to operate the closed circuit operator"s job.

6. The advertising company placed advertisements on closed circuit TV.

7. The access code allows access to the closed circuit system.

英文小作文：

Closed Circuit Television (CCTV) is a vital tool for protecting our homes and businesses. It provides a constant surveillance of the premises, ensuring that any potential threats are detected and dealt with promptly. CCTV cameras not only provide security, but also act as a deterrent to crime, reducing the likelihood of vandalism or theft.

Moreover, closed circuit systems can be used for various purposes, such as monitoring traffic conditions, recording events, or displaying advertisements to viewers. With the advancements in technology, CCTV systems have become more advanced and versatile, offering greater flexibility and functionality than ever before.

However, it is important to remember that while closed circuit television can provide security and convenience, it cannot replace human interaction and vigilance. It is still essential to have a well-trained team of security personnel on hand to respond to any emergencies or incidents that may arise.