名词
中文翻译：极地气团
同义词：
['polar vortex', 'polar front例句：1. The polar air mass is responsible for the cold weather in winter.（极地气团是冬季寒冷天气的原因。）']
例句：
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1. The polar air mass is responsible for the cold weather in winter.
极地气团是冬季寒冷天气的原因。
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2.During the polar air mass, there is a strong wind blowing from the northwest.
在极地气团期间，有一股强劲的西北风。
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3. The polar air mass can cause sudden drops in temperature and snowfall.
极地气团可能导致气温骤降和降雪。