polar的意思是：極地的; 近地極的; 南極(或北極)的; 磁極的; 完全相反的; 截然對立的;
polar造句：
1、The?Polar?Sea already has exceeded its 30-year life cycle - it was commissioned Feb. 23, 1978.
該船已經超過其30年的生命周期——1978年2月23日接受服役。
2、Two?polar?bears SPAR in the snow as a magenta sunset descends over Churchill, Manitoba, Canada.
品紅色的暮光降臨到加拿大曼尼·托巴省的丘吉爾小鎮，兩只北極熊正在雪中打鬧。
3、A female?polar?bear and her two-year-old cub wait for the sea ice to return.
母熊和她2歲的幼熊正在等待回家的海冰。
4、Specification of Q for Chandler Wobble Directly from?Polar?Motion Data
用極移數據直接測算錢德勒擺動Q值。
5、Here is the question. Is methane a?polar?molecule or a nonpolar?molecule? Let's look carefully.
問題是，甲烷是壹個極性分子還是非極性分子，我們仔細看看。
6、The origin in a?polar?coordinate system; the vertex of a?polar?angle.
極點壹個極坐標系中的始端；壹個極角的頂點
7、These are Tundra Buggies, designed to bring people to?polar?bears.
這些是苔原車，用於攜帶研究者接近北極熊。
8、Anyway, that is double integrals in?polar?coordinates.
這是極坐標系下的二重積分。