n.周期；循环( cycle的名词复数 )；周期；自行车整套； 双语释义：n.(名词)[C]循环,周期 a number related events happening in a regularly repeated order[C]自行车; 摩托车 bicycle; motor cycle, etc.v.(动词)vi. 骑自行〔摩托〕车 ride a bicycle英英释义： cyclen.an interval during which a recurring sequence of events