fluent

a.流利的，流畅的

flower, flower children (also flower people), flower power, flower-bed, flower-girl, flower-show, flowered, flowering, flowerless, flowerpot, flowery, flowing, flown, Flt Lt, flu, fluctuate, fluctuating, fluctuation, flue, fluency, fluently, fluff, fluffiness, fluffy, fluid, fluid ounce (abbr 缩写 fl oz), fluidity, fluke, fluky (also flukey), flummox, flung, flunk, flunkey (also flunky), fluoresce, fluorescence, fluorescent, fluorescent lamp, fluoridate, fluoridation, fluoride,