小面值硬币

例句：

1. 1. He bought a small coin for his grandma's birthday.
   他给奶奶买了一枚小硬币作为生日礼物。
2. 2. The old man kept a collection of coins in his wallet.
   那位老人在他的钱包里收藏着一些硬币。
3. 3. The coin collector was thrilled to find a rare coin in the antique shop.
   这位硬币收藏家在古董店发现了一枚罕见的硬币，非常兴奋。