spherical normal distribution

例句：

1. 1. The planet Mercury is known for its spherical shape.
   水星以其球形而闻名。
2. 2. The sphere of influence is spherical and can be measured by radius.
   影响力范围是球形的，可以通过半径来测量。
3. 3.The moon is spherical, but it's not round like a ball.
   月亮是球形的，但它不像球一样圆。