elliptic pencil of circle

例句：

1. 1. The elliptical orbitof the planet is a key to understandingits movement.
   行星的椭圆轨道是理解其运动的关键。
2. 2. The elliptical shapeof the galaxy suggests that it was formedby a collision between two smaller galaxies.
   星系的椭圆形状表明它是由两个较小的星系碰撞形成的。
3. 3. Theelliptical distribution ofresources in the region is causingsignificant environmental problems.
   该地区资源分布的椭圆化导致了严重的环境问题。