In particular, the speed of the Moon around the Sun will never be negative, so the Moon will never loop backwards.

特别是月球绕行太阳的速度决不可能是负的，所以月球永远不会向后打转。

youdao

In particular, the speed of the Moon around the Sun will never be negative, so the Moon will never loop backwards.

特别是月球绕行太阳的速度决不可能是负的，所以月球永远不会向后打转。

youdao