axis of rotation of ecliptic

例句：

1. 1. The planets revolve around the ecliptic.
   行星围绕黄道运行。
2. 2.Astronomers use the ecliptic to determine the date of a lunar eclipse.
   天文学家使用黄道来确定月食的日期。
3. 3. The ecliptic is the plane that divides the sky into two equal halves.
   黄道是把天空分成两个相等部分的平面。