fluid

n.液体，流体 a.流动的；易变的；流体的

flower-show, flowered, flowering, flowerless, flowerpot, flowery, flowing, flown, Flt Lt, flu, fluctuate, fluctuating, fluctuation, flue, fluency, fluent, fluently, fluff, fluffiness, fluffy, 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, fluoridization, fluoridisation, fluoridize, fluridise, fluorine, flurry, flush,