frost

n.冰冻，严寒；霜，结霜 v.(使)结霜，下霜

frogman, frolic, frolicsome, from, from memory, from now on, from side to side, from then on, from time to time, from...to, frond, front, front man, front runner, front-page, frontage, frontal, frontier, frontiersman, frontispiece, frost-bite, frost-bitten, frostbound, frostily, frostiness, frosting, frosty, froth, frothily, frothiness, frothy, frown, frowsty, frowsy, frowzy, froze, frozen, FRS, fructification, fructify,