地球公转速度

The speed of the Earth's revolution

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1
现在，月球的自转速度与绕地球公转速度是一样的。
Right now, the Moon's rotation rate, and the time it takes to orbit Earth are the same.
2
它围绕其恒星飞快旋转的速度是地球绕太阳公转速度的7倍，它距那颗恒星的距离比起水星离太阳距离要近23倍。
The planet whizzes around its star more than seven times faster than Earth moves, and is 23 times closer to the star than Mercury is to our sun.
3
这种拉伸了的椭圆轨道意味着：相较于地球距太阳最远的七月份，一月份时，地球更靠近太阳，并且围绕太阳的公转速度更快。
The elongated orbit means that Earth goes faster around the sun in January, when it is closest to the star, than it does when it is farthest away from the sun in July.

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