核心词议：
adj. 极地的；两极的；正好相反的
n. 极面；极线
polar 基本解释
adj. 极地的，两极的；正好相反的；[化，物]磁极的，有磁性的
n. [几]极线，极面
n. [几]极线，极面
速记方法
速记技巧 词根词缀法 -pol-极+-ar形容词词尾
知识扩展
重要短语
polar bear北极熊
polar coordinate极坐标；极座标；极坐标系统
polar region极地；近极区域
polar ice极地冰
中文词源
polar 地级的，两级的，截然对立的
来自pole,地级，两级。引申词义截然对立。
中文词源： polar 地级的，两级的，截然对立的 来自pole,地级，两级。引申词义截然对立。 polar
精选例句
1、 The polar vortex is a system of wintertime winds.
极地涡旋是冬季风形成的一个风系。
2、 There was a period of excessive warmth which melted some of the polar ice.
有段时期温度过高，融化了极地的部分冰层。
1、 J)There have been half-hearted but well-publicized efforts by some food companies to reduce calories in their processed foods, but the Standard American Diet is still the polar opposite of the healthy, mostly plant-based diet that just about every expert says we should be eating.
一些食品公司为减少加工食品中的卡路里含量做出了半心半意但广为宣传的努力，但标准美国饮食仍然与几乎每个专家都说我们应该吃的以植物为主的健康饮食截然相反。
1、 Bearded Russian priests offer regular services at the Orthodox church for the 16 or so Russian speakers who spend the winter at the base, largely polar scientists in fields like glaciology and meteorology.
留着大胡子的俄罗斯牧师定期在东正教教堂为在基地过冬的大约16名讲俄语的人提供服务，这些人主要是冰川学和气象学等领域的极地科学家。
常见考点例句：
- The moon was once thought to be dry . Then came hints of ice in the polar craters .
- 月球曾被认为很干燥，而后又有迹象显示在极地的月坑有冰。
- One concerned a 20-year-old hypothesis , supported by radar observations from earth , that suggested some polar craters might hide reserves of water-ice .
- 其中一个假说存在了20年的，这个假说认为一些极地的火山口处有刨冰存在，这个假说已通过地面雷达观测证实了。
- The deposits in the lunar craters may be as informative about the moon as ice cores from earth 's polar regions are about the planet 's past climates .
- 在月坑里的沉积物可能含有与月球相关的丰富信息，就像地球极地的冰芯那样，含有许多过去气候的信息。
- Between now and early september , when the polar pack ice shrivels to its summer minimum , they will pore over the daily sea ice reports of america 's national snow and ice data centre .
- 从现在到九月初，极地的积冰逐渐缩减到夏季最小量，这都会在美国国家冰雪数据中心的海冰报告里得到关注。
- The result , according to a modeling study published earlier this month the journal of geophysical research , is a strong high-pressure system over the newly exposed sea which brings cold polar air , swirling counter-clockwise , into europe .
- 根据这个月初在《地球物理学杂志》上发表的一项模拟研究，这将在刚冰层融合的海面上形成一个高压系统，正是这个刚形成的海面把极地的冷空气，顺时针漩涡方向带到了欧洲。
