corrugation

n fold; wrinkle 皱褶; 皱纹.

correspond to, correspondance, correspondence, correspondence course, correspondent, corresponding, correspondingly, corrider, corridor, corridor train, corrigendum, corroborate, corroboration, corroborative, corrode, corrosion, corrosive, corrugate, corrugated, corrugated iron, corrupt, corrupted, corruptibility, corruptible, corruption, corruptly, corruptness, corsage, corsair, corselet (also corslet), corset, cortege (also cortege), cortex, cortical, cortisol, cortisone, corundum, coruscate, coruscation, corvette,