词典释义：
a roughly circular line, route, or movement that starts and finishes at the same place
环线；环道；环行
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I ran a circuit of the village .我绕村子跑了个环线。
〈英〉 （赛车、赛马、田径运动的）车道；跑道。
a complete and closed path around which a circulating electric current can flow
电路，（电的）回路，线路。
a system of electrical conductors and components forming such a path
（电导体、组件构成的）电路系统。
an established itinerary of events or venues used for a particular activity, typically involving public performance
巡回活动；巡回活动集会地（尤指巡回公演剧场）
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the alternative cabaret circuit .作为替补的卡巴莱歌舞巡回表演。
a series of sporting events in which the same players regularly take part
（系列运动项目中同一运动员们经常参加的）巡回赛，联赛
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his first season on the professional circuit .他在职业巡回赛的第一个赛季。
a series of athletic exercises performed consecutively in one training session
（一套）体操动作
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[as modifier]
circuit training .体操训练。
(in the UK)a regular journey made by a judge around a particular district to hear cases in court
（英国）巡回审判
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[as modifier]
a circuit judge .进行巡回审判的法官。
a district of this type
巡回审判区。
a group of local Methodist Churches forming an administrative unit
卫理公会派组织。
a chain of theatres or cinemas under a single management
统一经营的连锁剧院（或影院）。
move all the way around (a place or thing)
绕（地点，事物）环行
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the trains will follow the Northern line, circuiting the capital .火车会绕首都沿北线行进。
"late Middle English： via Old French from Latin
