spheromak

例句：

1. 1. The sphere of influence is the area around a person or organization where they have influence.
   影响范围是一个人或组织周围有影响力的区域。
2. 2.The spheroid has a smooth surface and is often used in science experiments.
   椭球有一个光滑的表面，经常用于科学实验中。
3. 3.The sphere of influence can be influenced by external factors such as politics and culture.
   影响范围可以受到外部因素如政治和文化的影响。