circuit是什么意思

　　She made a slow circuit of the room.

　　她绕着房间缓缓地走了一圈。

　　I do circuit training once a week.

　　我每周做一次循环训练。

　　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。