Let us just assume for simplicity now that the orbits are roughly circular just to get a little bit of feeling for it.
现在为了简便，暂且认为轨道均大致为圆形，大致熟悉一下。
When the last plants and seedlings are buried and the last bit of compost laid, the garden will have circular brick steppingstones winding up two hills.
等到植物和幼苗种植完毕并施上肥料之后，将会在花园中的两座土丘上铺设环形砖石路径。
River Zi dulcimer the words are fewer, just a little bit teeny point chin, above all to turn circular to in walk.
江梓笙话更少，只是微微点了点下巴，率先转身向里走去。
The moon's orbit is elliptical rather than perfectly circular, so as the moon moves around the Earth it is sometimes a little bit closer and sometimes a bit further away from us.
月亮绕地球运行轨道为椭圆形而非正圆。所以月亮绕地球运动的过程中，有时月亮会离地球近一些，而有的时候离地球远一些。
The moon's orbit is elliptical rather than perfectly circular, so as the moon moves around the Earth it is sometimes a little bit closer and sometimes a bit further away from us.
月亮绕地球运行轨道为椭圆形而非正圆。所以月亮绕地球运动的过程中，有时月亮会离地球近一些，而有的时候离地球远一些。
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