biellipticity

例句：

1. 1.The geometry of the ellipse is a classic example of bielliptic shape.
   椭圆的几何形状是双曲几何的一个经典例子。
2. 2. In mathematics, the bielliptic function is used to model certain types of curves.
   在数学中，双曲函数被用来模拟某些类型的曲线。
3. 3. The bielliptic structure of the planetary system is fascinating and complex.
   行星系统的双曲结构既迷人又复杂。