小石子

例句：

1. 1. The riverbed is covered with small stones.
   河床覆盖着小石头。
2. 2. He picked up a few pebbles from the ground.
   他从地上捡起了几块小石头。
3. 3. The path was paved with smooth stones.
   这条路是用平滑的石头铺成的。