The cold weather had frozen the ground.

寒冷的天气使地面都冻硬了。

《牛津词典》

The falls are beautiful in warmer weather but when frozen, they take on a uniquely exquisite appearance.

瀑布在未结冰的时候就已经相当漂亮，在结冰之后又是另一番景观。

youdao

Not all frozen waterfalls are natural, though wind, weather and temperature play a large part in their formation.

虽然自然中的气候如风，温度对冰瀑的产生具有很强的诱导作用，但是并不一定所有的冰瀑都是自然景观。

youdao

The best time is after the ground has frozen but before the coldest weather arrives.

VOA: special.2009.06.30

In the poem "Mending Wall" the speaker and his neighbor walk together along a wall, repairing the damage caused by winter weather: Something there is that doesn't love a wall, That sends the frozen-ground-swell under it And spills the upper boulders in the sun, And makes gaps even two can pass abreast...

VOA: special.2011.04.17

We watch Balog and his assistants squint into gales and wrestle with cameras that the fierce weather has turned into frozen junk.

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They are entirely isolated, living in frozen tundra, perpetually enduring less-than-optimal weather patterns.

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But winter weather means more than just shoveling snow, bursting frozen pipes and sidewalks transformed into icy liabilities.

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