| 释义 |
polar capn.（名词）- Either of the regions around the poles of the earth that are permanently covered with ice.极地冰冠：地球两极附近终年被冰覆盖的地区中的一个
- A high-altitude icecap.高山冰冠：在高海拔地区形成的冰冠
- Astronomy Either of the regions around the poles of Mars that are covered with frozen carbon dioxide and water.【天文学】 极冠：火星两极中任一极的周围地区，覆盖着冰冻的二氧化碳和水
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