circuit.

柯林斯词典

1. N-COUNT An electrical circuit is a complete route which an electric current can flow around. 電路
Any attempts to cut through the cabling will break the electrical circuit. 任何切斷電纜的做法都會使電路中斷。
2. →see also closed-circuit
3. N-COUNT A circuit is a series of places that are visited regularly by a person or group, especially as a part of their job. 巡廻的場所
It's a common problem, the one I'm asked about most when I'm on the lecture circuit. 這是個常見問題，一個在我巡廻縯講時人們最常問到的問題。