造币

例句：

1. 1. He found a small coin in the pocket of his coat.
   他在外套口袋里发现了一枚小硬币。
2. 2. The old man had saved up enough money to buy a new coin collection.
   这位老人积攒了足够的钱来购买一个新的硬币收藏。
3. 3. She gave him a coin as a reward for his hard work.
   她给了他一个硬币作为他努力工作的奖励。