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- The two systems of government are polar opposites. 这两种政体正好相反。
- He devoted all his life to China's aviation. 他的一生都奉献给了中国的航空事业。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- 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。
- Aviation was lamentably weak and primitive. 航空设施极其薄弱简陋。
- At that time aviation was still in its infancy. 当时航空仍在萌芽阶段。
- 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。
- Civil aviation in this area develops very quickly. 这个地区的民航发展很快。
- Love and hatred are polar feelings. 爱与恨是完全相反的感情。
- What about the reconnaissance aviation? 侦察航空兵呢?
- What is the main task of the bombardment aviation? 轰炸航空兵的主要任务是什么呢?
- 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
- They pioneered in early aviation. 他们曾作为早期航空的先驱。
- A polar bear has a preference for cold weather. 北极熊喜欢寒冷的天气。
- Does U. S Aviation Security Still Has Problems? 英国的航空安全是否依然存在问题?
