circle,圈，-it,走，词源同ion,exit,itinerary.

1. He was just starting to become known on the cabaret circuit.

他在卡巴莱歌舞表演圈中刚刚开始有点名气。

2. There is an internal circuit breaker to protect the instrument from overload.

内置有断路器，防止设备过载。

3. There's a closed-circuit television camera in the reception area.

接待处有一个闭路电视摄像头。

4. The approach was intended to short-circuit normal complaints procedures.

这种方法旨在避开正常的投诉程序。

5. The fire was started by an electrical short-circuit.

火灾是由电线短路引发的。