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
noun
1. the part of the Earth''s surface forming a cap over a pole
characterized by frigid climate
Synonym: Frigid Zonepolar region