roll change side

例句：

1. 1.The old man carefully rolled the change sideto make sure he had counted all hiscoins.
   老人小心翼翼地滚动硬币的侧面，确保他数了所有的硬币。
2. 2. The thiefquickly rolled the change side over to hidethe stolen money.
   小偷迅速地滚动硬币的侧面，以掩盖偷来的钱财。
3. 3. When shewas young, she used to roll thechange side of her pocket money to seeif there were any hidden surprises.
   她小时候喜欢滚动她的零花钱的硬币侧面，看看里面是否有隐藏的小惊喜。