[天]?拱极区
... 拱极的 circumpolar 拱极区 circumpolar zone 拱极星 circumpolar star ...
?环极区带
... circumpolar ring 环极圈 circumpolar zone 环极区带 circumpolar species 环极圈种 ...
?环极圈带
... 阴极圈 cathode loop 环极圈带 circumpolar zone 环极圈种 circumpolar species ...
?极圈带
... 围咽连合神经 circumpharynceal commissure 极圈带；环极区带 circumpolar zone 轮廓乳突 circumvallate papilla ...
They say there is particular concern over the very long-lived northern low pressure zone of circumpolar winds, called a vortex, found at between 13 and 34 km (8 and 21 miles) above the Earth's surface.
BBC: By Environment Correspondent Alex Kirby
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。