elliptic complex

例句：

1. 1. The elliptical orbit of the planet Mars is well-known.
   火星的椭圆轨道广为人知。
2. 2. The elliptical shape of the galaxy is fascinating.
   星系的椭圆形状令人着迷。
3. 3. The elliptical distribution of resources is a challenge for sustainable development.
   资源分布的椭圆特性是可持续发展的一个挑战。