英语词汇“polar front”是什么意思，“polar front”的读音、用法及例句翻译-烛光网

词汇	polar front
释义	polar frontn.（名词） The region or boundary separating air masses of polar origin from those of tropical or subtropical origin.极锋：将南极气团与赤道或亚热带地区气团隔离开来的区域或分界
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