您要查找的是不是：
- The two systems of government are polar opposites. 这两种政体正好相反。
- A lunar occultation of a quasar. 类星体的月星掩测定
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- A month, especially a lunar month. 太阴月一个月，尤指阴历的月
- A luminous spot on a lunar halo. 幻月，假月月晕上的光斑
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- lunar polarization 月球偏振
- The astronauts piloted their craft down to the lunar surface. 宇航员驾驶宇宙飞船在月球表面降落。
- 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。
- It was reported that there would be a lunar eclipse tomorrow evening. 据报道说，明天晚上有月食。
- News of the lunar landing swept the country. 登陆月球的消息一下传遍全国
- 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。
- A young Air Force officer served as lunar module pilot for Apollo 16. 一位年轻的空军军官担任了阿波罗16号登月舱的驾驶员。
- 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。
- The lunar gravity is about one-sixth that on earth. 月亮的引力大约为地球的六分之一。
- Solar perturbation of the lunar orbit. 出差由于太阳引力引起的月球轨道运动的摄动
