球形体

例句：

1. 1. The sphere of influence is the area around a person or thing that they can affect.
   影响范围是一个人或事物周围可以影响的区域。
2. 2. The sphere of influence is different for each planet in our solar system.
   太阳系中的每个行星的影响力范围是不同的。
3. 3. The sphere of influence is limited by the size and distance of the object.
   影响力范围受到物体的大小和距离的限制。