frown

vi.皱眉头

front man, front runner, front-page, frontage, frontal, frontier, frontiersman, frontispiece, frost, frost-bite, frost-bitten, frostbound, frostily, frostiness, frosting, frosty, froth, frothily, frothiness, frothy, frowsty, frowsy, frowzy, froze, frozen, FRS, fructification, fructify, fructose, frugal, frugality, frugally, fruit, fruit machine, fruit salad, fruit-cake, fruit-fly, fruit-knife, fruiterer, fruitful,