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- POLAR MIGRATION AND NUTATION OF CIP AXIS OF RIGID EARTH 刚体地球CIP轴的极移和岁差章动
- 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。
- Scientists have studied the migration of fish over long distances. 科学家研究过鱼类远距离回游的现象。
- 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。
- polar migration 极移
- There has been a migration of people from the country to the towns. 人们从乡下移居城镇。
- 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。
- 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。
- There was a huge migration of people into Europe because of the war. 因为战争，大量的移民涌入欧洲。
- Seabirds will fly from here to another place for migration every year. 海鸟每年都要从一个地方迁徙到另一个地方。
- 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。
- By mid-October Operation Migration was ready. 到了10月中旬，迁徙行动的准备工作就绪。
- 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。
