巨眼如轮
cycle
cycle循环、周期；（使）循环、骑自行车
bicycle
tricycle
unicycle
cyclist
uncyclopedia
cyclone
cyclamen
circ
circle
encircle
semicircle
circular
circulate
circulation
circus
circuit
ciruitous
circuity
opt
optic
optical
optician
optics
opto
optometer
optometry
dentistry
peasantry
optometrist