flu

n.流行感冒

flour, flourish, floury, flout, flow, flow chart (also flow diagram), flower, flower children (also flower people), flower power, flower-bed, flower-girl, flower-show, flowered, flowering, flowerless, flowerpot, flowery, flowing, flown, Flt Lt, fluctuate, fluctuating, fluctuation, flue, fluency, fluent, fluently, fluff, fluffiness, fluffy, fluid, fluid ounce (abbr 缩写 fl oz), fluidity, fluke, fluky (also flukey), flummox, flung, flunk, flunkey (also flunky), fluoresce,