cycle
/ˈsaɪkl; `saɪkl/ n
1 series of events that are regularly repeated in the same order 循环; 周期
the cycle of the seasons 四季的循环
the cycle of economic booms and slumps 经济繁荣和经济萧条的周期变化.
2 complete set or series, eg of songs or poems 整套, 整个系列（如组歌或组诗）
a Schubert song cycle 舒伯特的组歌.
3 (infml 口) bicycle, motor cycle, etc 自行车、 摩托车等
[attrib 作定语]
a cycle shop, race 自行车商店、 比赛. Cf 参看 bike. cycle, v [I, Ipr, Ip] ride a bicycle 骑自行车: go cycling 去骑自行车
He cycles to work every day. 他每天骑自行车上班.
She cycled along (the street). 她（沿著街道）骑著自行车.