aspherical figure

例句：

1. 1. The planet Mercury is known for its asteroid belts, which are shaped like a spherical figure.
   水星以其小行星带而闻名，这些小行星带的形状像一个球体。
2. 2.The scientist found the shape of the planet Mars to be spherical, with a diameter of about 6,770 kilometers.
   科学家发现火星的形状是球体，直径约为6,770公里。
3. 3. The physicist used a spherical figure to describe the distribution of matter on the surface of theplanet Earth.
   物理学家使用一个球体形状来描述地球表面物质的分布。