名词
中文翻译：硬霜
同义词：
['cold frost', 'severe frost']
例句：
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1.The hard frost has made the roads treacherous to drive on.
硬霜使道路变得难以驾驶。
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2. The farmers have been working hard to get their crops ready for the coming winter.
农民们一直在努力工作，为即将到来的冬天做准备。
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3.The hard frost has delayed the start of spring planting season.
硬霜推迟了春季种植季节的开始。