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電路;(電流的)回路
An electrical circuit is a complete route which an electric current can flow around.
例句
Any attempts to cut through the cabling will break the electrical circuit.
只要一割斷電纜，電路就中斷。
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（尤指工作時(shí)的）巡回線(xiàn)路，巡回，巡游
A circuit is a series of places that are visited regularly by a person or group, especially as a part of their job.
例句
He joined the professional circuit...
他參加了職業(yè)巡回賽。
It's a common problem, the one I'm asked about most when I'm on the lecture circuit.
這問(wèn)題很常見(jiàn)，我在巡回講演時(shí)被問(wèn)得最多的就是這個(gè)問(wèn)題。
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賽車(chē)道
A racing circuit is a track on which cars, motorbikes, or cycles race.
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(繞著某地的)環(huán)行，環(huán)游
A circuit of a place or area is a journey all the way round it.
例句
She made a slow circuit of the room.
她繞著房間緩緩地走了一圈。