circ
cycl
orb, orbit
circ
詞根含義：ring;
助記詞：circle，circ（圓環）+le=》圓，環繞
同根詞：circle, circular, encircle, circus, circulate, circuit, microcircuit
cycl
詞根含義：circle;
助記詞：cycle，cycl（圓）+e=》繞圓一周=》周期，循環
同根詞：autocycle, bicycle, cycle, cyclone, encyclopaedia, hemicycle, tetracycline, unicycle,
orb, orbit
詞根含義：circle;
助記詞：orbit，orbit（圓圈）=》圓圈留下的痕跡（比如地球繞太陽運動的軌道）=》軌道
同根詞：orb, orbicular, orbit, orbital, exorbitant
orbit---solar-system.jpg
