| 21. | the earth's orbit round the sun |
| 地球太阳运行的轨道．
|
| 22. | an elliptic orbit |
| 椭圆形轨道．
|
| 23. | the lunar orbit |
| 月球的轨道．
|
| 24. | sb's social orbit |
| 某人的社交圈子．
|
| 25. | the trading orbit of a country |
| 一个国家的贸易圈．
|
| 26. | a planet's motion in its orbit |
| 行星在轨道上的运行．
|
| 27. | a problem not in sb's orbit |
| 某人领域之外的问题．
|
| 28. | put a manmade earth satellite in to orbit |
| 把人造地球卫星送入轨道．
|
| 29. | the axis of an orbit |
| 轨道的中轴．
|
| 30. | be out of the Labor Party's orbit |
| 在工党的影响范围之外．
|