n (1) 1) 冰点以下的温度(weather when the air temperature is below that at which water freezes) [U]：a temperature of five degrees of～冰点下五摄氏度的气温;There was a～this morning. 今晨有轻霜冻。be killed by～死于霜冻; 2) 冰冻，严寒 (period of frost) [C]：There was a heavy/severe/hard～yesterday.昨天有严重的霜冻。have several～s 有数次严寒;early/late～s 早(秋)/晚(春)寒;

(2) 霜(white powdery substance that covers the ground roofs，etc when the air temperature falls below the freezing-point of water) [U]：(ground/grass/windscreen) be covered with～(地面/草/汽车挡风玻璃上)复盖着一层霜;The～is still on the grass. 草上仍有霜。

→′frost-bite n 冻伤(疮);′frost-bitten adj 冻伤的;′frost-bound adj(土地)冰冻的;′frosty adj 严寒(霜冻)的;′frostily adv 严寒地;′frostiness n 严寒，霜冻;

vt (1) 结霜于……上(become covered with frost) [T+n]：～the windows窗户上结霜;～ed pavements结了一层霜的人行道;

(2) 将……变成霜状表面(make sth (esp glass) look as if it is covered with frost) [T+n]：(cocktail glass) be～ed with sugar(鸡尾酒杯)沾满了糖;～ed glass/window panes磨砂玻璃/窗玻璃;

frost over/up (v adv) 被霜覆盖(vi)：The fields/car windscreen～ed over. 田地/汽车挡风玻璃上结了一层霜。The car windscreen/window has～ed up. 汽车挡风玻璃/窗玻璃上结了一层霜。