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The two systems of government are polar opposites. 这两种政体正好相反。
You need a strong adhesive to bond wood to metal. 需要强力胶才能把木料粘在金属上。
Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
This glue makes a good firm bond. 这种胶水粘得很结实。
Common tastes form a bond between the two men. 共同的爱好使两人结交为朋友。
The bond that binds the smugglers together is a rope of sand. 把走私犯联接起来的是条沙做的绳子，一碰就碎。
Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
Common interests formed a bond between us. 共同的利益把我们联系在一起。
Identity of interests is the bond that unites them. 利害的一致是把他们联合起来的纽带。
Located or found in one of the Polar Regions. 环极的，围绕极地的位于或发现于一个极地区域中的
A unifying bond, especially a marriage bond. 结合一种联结的纽带，尤指婚姻纽带
non polar linkage 非极性键
In spite of vigilance a polar bear escape from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
polar linkage 极性键
A bond of sympathy developed between members of the group. 该组织成员间产生了志同道合的凝聚力。
The polar region is the habitat of the polar bear. 北极地带为北极熊的栖息地。
Although they can swim, the polar bears are terrestrial animals. 北极熊虽然会游泳，但也是陆栖动物。
In spite of vigilance a polar bear escaped from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
Normally, we use the word bond to describe the linkage between a particular pair of atoms. 通常我们用键这个词来描述指定的一对原子之间的键合。
The polar bear's habitat is the icy waters of the Arctic. 北极熊的栖息地是冰冷的北极海域。