adj. 1.(南、北)极的，地极的；近地极的。 2.【物、化】(有)极的；磁极的；有磁性的。 3.【几】极线的。 4.【化学】极化的，离子化的；(多)极性的。 5.中轴一样的；中心的；(像北极星那样)有指向意义的。 6.(性格)正相反的。 n. 【几】极线；极面。
of or existing at or near a geographical pole or within the Arctic or Antarctic Circles; "polar regions"
located at or near or coming from the earth''s poles; "polar diameter"; "polar zone"; "a polar air mass"; "Antarctica is the only polar continent"
having a pair of equal and opposite charges
being of crucial importance; "a pivotal event"; "Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger; "the polar events of this study"; "a polar principal" 同义词：pivotal,
extremely cold; "an arctic climate"; "a frigid day"; "gelid waters of the North Atlantic"; "glacial winds"; "icy hands"; "polar weather" 同义词：arctic, frigid, gelid, glacial, icy,
characterized by opposite extremes; completely opposed; "in diametric contradiction to his claims"; "diametrical (or opposite) points of view"; "opposite meanings"; "extreme and indefensible polar positions" 同义词：diametric, diametrical, opposite,
例句与用法
1.
Keesh lived at the edge of the polar sea . 季奚住在北极海的边缘上。
2.
Over the polar regions we should see aurora . 在极地高空，我们会看到极光。
3.
I am steady as a rock-fixed as the polar star . 我坚定得象磐石，稳定得象北极星。
4.
We carry out a transformation to spherical polar coordinates . 我们变换成球极坐标。
5.
Middle-latitude cyclones originate at the polar front . 中纬度地区的气旋发源于极锋。
6.
Alaska still is a land of iceberg and polar bear . 阿拉斯加现在仍是冰山和北极熊的世界。
7.
Stratification in polar water normally is weak and transient . 极地水域的成层性是微弱而暂时的。
8.
Stratification in polar waters normally is weak and transient . 极地水域的成层性是微弱而暂时的。
9.
A molecule where the centers do not coincide is called a polar molecule . 正负电荷中心不重合的分子称为极性分子。
10.
The radome causes an angular displacement of the tracking aerial polar diagram . 天线罩使跟踪天线的极图产生了角位移。
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