three-axial ellipsoid

例句：

1. 1. The three-axis ellipsoid is a mathematical model that describes the shape of an object when viewed from multiple angles.
   三轴椭球体是一种数学模型，用于描述从多个角度观察时物体的形状。
2. 2. In space exploration, scientists use three-axis ellipsoids to simulate the movement of objects inorbit around the Earth.
   在太空探索中，科学家使用三轴椭球来模拟围绕地球运行的物体的运动。
3. 3.The three-axis ellipsoid is used in navigation systems to calculate the distance between two points on the surface of the Earth.
   三轴椭球被用于导航系统来计算地球表面两点之间的距离。