elliptical motion

例句：

1. 1. The elliptical motion of the planets is fascinating to watch.
   行星的椭圆运动令人着迷。
2. 2.The elliptical motion of the Earth's orbit around the sun is crucial for our survival.
   地球围绕太阳的椭圆运动对我们的生存至关重要。
3. 3. The elliptical motion of the moon's tides is a natural phenomenon that affects the tides on Earth.
   月球潮汐的椭圆运动是一种自然现象，影响了地球上的潮汐。