N-VAR
霜;霜凍;嚴(yán)寒天氣
When there is frost or a frost, the temperature outside falls below freezing point and the ground becomes covered in ice crystals.
例句
There is frost on the ground and snow is forecast...
地上結(jié)霜了，而且預(yù)報(bào)說會(huì)有雪。
The wind had veered to north, bringing clear skies and a keen frost.
風(fēng)向已經(jīng)轉(zhuǎn)北，帶來了晴朗的天空和嚴(yán)重的霜凍。