ballyrag

例句：

1. 1. The ballyrag was a perfect circle.
   那个球体是一个完美的圆形。
2. 2. The scientist discovered a new type of ballyrag.
   科学家发现了一种新的球体。
3. 3. The ballyrag is used to store and transport goods.
   这个球体用来储存和运输货物。