这是因为月球环绕地球的轨道是卵形的或者椭圆形的。

This is because of the Moon's orbit around Earth which is oval or elliptical in shape.

youdao

这是因为月球环绕地球的轨道是卵形的或者椭圆形的。

This is because of the Moon's orbit around Earth which is oval or elliptical in shape.

youdao