n. 环路；巡回；电路（circuit的复数）

n an electrical device that provides a path for electrical current to flow

n a journey or route all the way around a particular place or area

n an established itinerary of venues or events that a particular group of people travel to

n the boundary line encompassing an area or object

n (law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations); one of the twelve groups of states in the United States that is covered by a particular circuit court of appeals

n a racetrack for automobile races

n movement once around a course

v make a circuit