weighted ball

• 重球

weighted ball的用法和样例：

例句

1. Bowling is a game played by rolling a heavy ball down a wooden lane.
   保龄球是一项沿木制球道滚动一个重球的游戏。
2. From the top of the tower Galileo dropped a light ball and a heavy ball at exactly the same time.
   伽利略从塔顶上让一个轻球和一个重球准确地在同一时间里自由落下。