释义：[建] 圆的，循环的； 双语释义：n.(名词)[C]电路,线路 the complete circular path of an electric current[C]巡回(路线); 绕道,迂回 a curving path that forms a complete circle round an area英英释义： circuit[ 'sə:kit ]n.an electrical device that provides a path for electrical current to flo