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- The two systems of government are polar opposites. 这两种政体正好相反。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- polar tubules 极区微管
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- 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
- 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。
- 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。
- Spermaries comprise many seminiferous tubules. 精巢由许多精小管组成；
- 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。
- Love and hatred are polar feelings. 爱与恨是完全相反的感情。
- Extending across or crossing either of the Polar Regions. 横越极地任一个横越或穿过两个极地地区中的
- A polar bear has a preference for cold weather. 北极熊喜欢寒冷的天气。
- There is focal atrophy of tubules seen here to the upper right. 右上方可见生精小管的灶状萎缩。
- 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。
- They have some very funny polar bears here. 他们这里有一些很有趣的北极熊。
- E.[ Tubules， showing acidophilic masses（ arrows）， H. 肾小管，示嗜酸性团块（箭头）， H.
- We have polar bears and a real iceberg too! 我们有北极熊，还有一座真正的冰山！
- E. [ Tubules , showing acidophilic masses (arrows) , H. 肾小管 ; 示嗜酸性团块 (箭头 ) ; H.
