1 N-VAR 霜;霜冻;严寒天气 When there is frost or a frost, the temperature outside falls below freezing point and the ground becomes covered in ice crystals. 霜;霜冻;严寒天气
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There is frost on the ground and snow is forecast.
地上结霜了，而且预报说会有雪。
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The wind had veered to north, bringing clear skies and a keen frost.
风向已经转北，带来了晴朗的天空和严重的霜冻。
SYN hoarfrost, freeze, freeze-up, Jack Frost
2 PHRASE 冰点以下…度;零下…度 When someone says that there are a particular number of degrees of frost they mean that the temperature is that number of degrees below freezing point. 冰点以下…度;零下…度 [British]
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