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But the general solutions call for a elliptical orbit.
但是，一般的解决方法，还是需要一个椭圆轨道。
youdao
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The Moon's elliptical orbit means its distance from the Earth is not constant.
月球椭圆型的轨道意味着它到地球的距离是变化着的。
youdao
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The Moon's elliptical orbit means its distance from the Earth is not constant.
月球椭圆型的轨道意味着它到地球的距离是变化着的。
youdao