“公转”造句

地球既公转又自转.
The earth revolves both round the sun and on its own axis.

地球自转与地球绕日公转产生附加的频移.
The earth's rotation and its motion around the sun add an appreciable frequency shift.

月球的自转与公转精确地同步.
In the case of the moon the rotation keeps pace exactly with the revolution.

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