translation.en: And we live in the middle of it, so when we look towards the center, we see this plane which defines the plane of the galaxy, or line that defines the plane of the galaxy.
translation.zh: 而且我们居住在中央，因此当我们看向中心， 我们把这个平面看成是星系的平面， 或者把这条线看成是星系的平面