semiellipsoid

例句：

1. 1.The shape of the planet is a semiellipsoid, with its equator tilted at an angle.
   这个星球的形状是一个半椭球体，赤道倾斜。
2. 2.The scientists used a computer model to simulate the behavior of a semiellipsoid.
   科学家们使用计算机模型模拟了半椭球体的行为。
3. 3. The satellite was designed to orbit around the Earth in a semiellipsoid path.
   卫星被设计成围绕地球以半椭球路径运行。