- polar telescope
- 北极: the North Pole
- 管: pipe; tube
- 北极: 1.(地轴的北端) the north pole; the arctic pole; arctic2.(北磁极) the north magnetic pole◇北极地区 arctic; arctic regions; north polar regions; 北极地衣 arctic lichens; 北极高山群落 arctalpine community; 北极高山群系 arctalpine formation; 北极高山植物区系 arctalpine flora; 北极管 polar tube; polar telescope; 北极光 northern lights; aurora borealis; aurora polaris; 北极光幕 dramundan; 北极红点鲑 arctic charr; 北极狐 arctic fox; alopex lagopus; 北极茴鱼 alaska grayling; 北极剪秋罗 alpine campion; 北极露脊鲸 icebreaker; greeland whale; bowhead; arctic whale; 北极气团 arctic air; arctic air mass; 北极圈 the arctic circle; arctic; 北极犬 eskimo dog; 北极兔 polar hare; 北极熊 bear; polar bear; 北极岩群 arctic suite; 北极晕 aurora glory
- 极管: polar tubule
- 北极，北极的: arctic
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