as happy as a sand boy

例句：

1. 1.He is as happy as a sand boy after winning the lottery.
   他中了彩票后非常开心。
2. 2. After the rain, the flowers are as happy as a sand boy.
   雨后，花儿们非常高兴。
3. 3. She was as happy as a sand boy when she received her new job offer.
   她收到新工作邀请时非常高兴。