planetary rolling

例句：

1. 1. The planetary scientists are studying theeffects of climate change on the Earth's orbit.
   行星科学家们正在研究气候变化对地球轨道的影响。
2. 2. The planetary rotation causesthe seasons to change.
   行星的自转导致季节变化。
3. 3. The planetary scientists havediscovered a new type of celestial body that rotates around its ownaxis.
   行星科学家们发现了一种围绕自身轴旋转的新天体。