形容詞 polar:

1. having a pair of equal and opposite charges
2. characterized by opposite extremes; completely opposed
   同義詞：diametric, diametrical, opposite
3. located at or near or coming from the earth's poles
4. of or existing at or near a geographical pole or within the Arctic or Antarctic Circles
5. extremely cold
   同義詞：arctic, frigid, gelid, glacial, icy
6. being of crucial importance
   同義詞：pivotal

1. Although they can swim, the polar bears are terrestrial animals.
   北極熊雖然會(huì)游泳，但也是陸棲動(dòng)物。
2. The polar bear's habitat is the icy waters of the Arctic.
   北極熊的棲息地是冰冷的北極海域。
3. Located or found in one of the Polar Regions.
   環(huán)極的，圍繞極地的位于或發(fā)現(xiàn)于一個(gè)極地區(qū)域中的
4. Are there any animals in the polar circles?
   南極圈和北極圈內(nèi)有動(dòng)物存在嗎？
5. Polar distance; polar diameter.
   極距; 兩極的直徑
6. The two systems of government are polar opposites.
   這兩種政體正好相反。

po.lar

adj.（形容詞）

Of or relating to a pole.
極地的：極地的，有關(guān)極地的
Measured from or referred to a pole:
從極地測(cè)量的，參照極地的：
例句：
polar distance; polar diameter.
極距；兩極的直徑

Relating to, connected with, or located near the North Pole or South Pole.
近極地的：關(guān)于北極或南極的，與極地相連的，或位于北極或南極附近的

Passing over a planet`s north and south poles:
越過(guò)極地的：經(jīng)過(guò)一個(gè)行星的南極和北極上空的：
例句：
a polar orbit.
越過(guò)極地的軌道

Traveling in an orbit that passes over a planet`s north and south poles.
行經(jīng)極地的：在一條經(jīng)過(guò)一行星南北極上空的軌道中運(yùn)行的
Serving as a guide, as a polestar or a pole of the earth.
指示的；引導(dǎo)的：用作導(dǎo)向的，如一顆北極星或地球的一極
Occupying or characterized by opposite extremes:
對(duì)立的，相反的：占據(jù)著兩個(gè)相反極端的，或以占據(jù)相反極端為特征的：
例句：
.In creative territory[they] make a strange yet ineluctable couple, more complementary, even polar, than twin-like. (Josh Rubins)
.在創(chuàng)造領(lǐng)域[他們] 構(gòu)成了奇異的卻又不可避免的一對(duì)，與其說(shuō)是象雙胞胎，不如說(shuō)是互補(bǔ)的，甚至是截然對(duì)立的. (約什·魯賓斯)

Central or pivotal.
中樞的，中心的
Chemistry Having to do with or characterized by a dipole:
【化學(xué)】 偶極的：與偶極有關(guān)的或具有偶極特征的：
例句：
a polar molecule.
偶極的分子