balls

例句：

1. 1. She threw the ball into the pool.
   她把球扔进了游泳池。
2. 2. The children were playing with balls in the park.
   孩子们在公园里和球玩耍。
3. 3. He was so excited that he could hardly contain himself.
   他太兴奋了，几乎控制不住自己。