There was a hard frost that night.

那天晚上寒冷多霜。

《牛津词典》

There was a hard frost last night.

昨天夜里有严重霜冻。

youdao

The forecast says there's going to be a hard frost tonight.

天气预报说今夜有严重霜冻。

youdao

Frost is not after "easy gold" but rather hard-earned wages.

弗罗斯特不追寻这些轻易得来的金钱而是实在地挣钱。

耶鲁公开课 - 现代诗歌课程节选

There would be a widespread hard frost, with ice a hazard, on Wednesday night while snow expected for Scotland and northern England on Thursday morning would bring the potential for disruption.

BBC: Snow leads to crashes and delays in parts of UK

The economy has been a major push factor for residents in the Frost Belt, particularly those in hard-hit areas like Michigan.

FORBES: The States People Are Fleeing In 2013

When combined with the delicate slaw, it's hard not to feel a little grateful for the frost.

WSJ: Paul Kahan's Shaved Brussels Sprout Salad With Burrata | Slow Food Fast