adj.围绕天极的；地极附近的
n.周极星；拱极星

The North Star is a circumpolar star in the Northern Hemisphere.
北极星在北半球是一颗恒显星。
Circumpolar constellations are visible year-round in the polar regions.
极地地区全年可见的星座是恒显圈星座。
The Arctic is home to many circumpolar indigenous peoples.
北极是许多环极土著民族的家园。
In Antarctica, the Adélie penguin is a circumpolar species.
在南极洲，阿德利企鹅是一种环南极分布的物种。
The circumpolar current keeps warm waters away from Antarctica.
环南极洋流使温暖的水域远离南极洲。
The circumpolar sky was a vital navigational aid for ancient mariners.
环极星空对古代航海者来说是至关重要的导航工具。
Several species of terns have circumpolar distributions across the globe.
几种燕鸥在全球范围内有环极分布。
The circumpolar aurora can be seen in high latitude regions like Scandinavia.
北极光可以在高纬度地区如斯堪的纳维亚看到。
The concept of circumpolar culture refers to shared traditions among people living near Earth's poles.
环极文化的概念指的是居住在地球两极附近人们共有的传统。
Circumpolar plants must adapt to continuous daylight during summer months.
环极地区的植物必须适应夏季持续的日光照射。