名词
中文翻译：冷平流
同义词：
['cold air current', 'cold air flow']
例句：
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1. The cold levelling has caused the temperature to drop significantly.
冷空气平流导致温度显著下降。
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2. The cold air current is responsible for the frequent snowfalls in this region.
冷空气流是该地区频繁降雪的原因。
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3. The cold air flow can be seen from the observation deck on the mountain top.
从山顶的观察台上可以看到冷空气流。