cyclic

(also cyclical/ 5saIklIkl;`saIklIkl/) adj recurring in cycles; regularly repeated 循环的; 有规律地重复的: the cyclical nature of economic activity 经济活动的周期性质.

cutpurse, cutter, cutthroat, cutthroat razor, cutting, cutting bit, cutting-room, cuttingly, cuttlefish, cutworm, cv, cwm, cwt, cyanide, cybernetic, cybernetics, cyberspace, cyclamate, cyclamen, cycle, cyclical, cyclically, cyclist, cyclone, cyclonic, Cyclopean, cyclostyle, cyclotron, cyder, cygnet, cylinder, cylinder block, cylinder head, cylindrical, cymbal, cynic, cynical, cynically, cynicism, cynosure,