half-crown

例句：

1. 1. I found a half-crown on the ground, and it was quite a find.
   我在地板上发现了一枚半克朗，真是个意外的发现。
2. 2. The half-crown in my pocket is worth more than the price of the book.
   我口袋里的半克朗比这本书的价格还要高。
3. 3. The old lady gave me a half-crown as a reward for helping her with her garden.
   那位老妇人给了我一枚半克朗作为帮助她打理花园的报酬。