scillin

例句：

1. 1. The road was covered in small stones and pebbles.
   这条路上满是小石头和碎石。
2. 2. He used a stone to break the glass.
   他用一块石头打破了玻璃。
3. 3. The gravel path led to the river.
   砾石小路通向了河流。