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- earth rs magnetism 地磁
- Most of the earth rs surface is covered by water. 大部分的地球表面被水覆盖着。
- Earth quakes can result from stresses in the earth rs crust. 地壳内的应力可能引起地震。
- The sun appears to rise and set because of the earth rs rotation. 因为地球在自转，看上去就有了日出和日落。
- Lunar eclipse occurs when the earth rs shadow falls on the moon. 地球的影子落在月球上时，就发生月蚀。
- earth rs magnetic pole 地球磁极
- earth rs magnetic field 地球磁场
- Children supporting their parents is nature rs law and earth rs way. 子女奉养父母是天经地义的。
- earth rs line of maximum atmospheric gradient 地球最大大气梯度线
- the loose mass of the earth rs crust 一层松散物质
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- earth rs gravitational field model 地球重力场模型
- reentry into the earth rs atmosphere 重入地球大气层
- The attraction of the moon for the earth causes the tides. 月球对地球的吸引力造成潮汐。
- The study of the earth's magnetism. 地磁学研究地球磁力的学科
- This book is about the earth's magnetism. 这本书是有关于地磁的。
- The earth is only a speck in the universe. 地球在宇宙中只不过是一个小点罢了。
- The earth may be thought of as a gigantic magnet. 整个地球可以想象为一块硕大无朋的磁石。
- How on earth do they manage to rob the bank? 他们到底怎么抢了银行的？
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
