Let's continue our discussion now by talking about orbits, especially those of the so-called periodic-orbit comets.

现在我们继续讨论，谈谈轨道，特别是那些所谓的周期轨道彗星。

youdao

Let's continue our discussion now by talking about orbits, especially those of the so-called periodic-orbit comets.

现在我们继续讨论，谈谈轨道，特别是那些所谓的周期轨道彗星。

youdao