elliptic Riemann surface

例句：

1. 1. The elliptic curve is amathematical concept that describes the shape of anellipse.
   椭圆曲线是描述椭圆形状的数学概念。
2. 2. The ellipticequation is used to describe the shape ofan ellipse in physics.
   椭圆方程用于描述物理学中椭圆的形状。
3. 3.The elliptic orbit is a typeof orbit in astronomy that hasa circular path.
   椭圆轨道是天文学中的一种轨道类型，具有圆形路径。