名词
中文翻译：黑霜
同义词：
['black frost', 'black fog']
例句：
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1.The trees were covered in a thick layer of black frost.
树木上覆盖着厚厚的一层黑霜。
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2.The cold weather caused the ground to freeze and form black frost.
寒冷的天气导致地面结冰并形成黑霜。
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3.The black frost made it difficult for people to walk on the road.
黑霜使人们难以在道路上行走。