1. 极带：polar year 极年 | polar zone 极带 | polarimeter 偏振计
2. 寒带：polar region 极地 | polar zone 寒带 | polarimeter 偏振计
3. 極區：polar year 極年 | polar zone 極區 | polar-cap absorption 極冠吸收
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1. The blueprint for a polar animal theme park has been completed in the Shenzhen Special Economic Zone.
2. The two sides have also worked together on integrated coastal zone management, marine environmental services and polar research.
noun
1. the part of the Earth's surface forming a cap over a pole
characterized by frigid climate
Synonym: Frigid Zone polar region