alluvial water

例句：

1. 1. The alluvial fan is the result of the river's flow over the land.
   冲积扇是河流在陆地上流动的结果。
2. 2.The alluvial deposits are rich in minerals and can be used for building materials.
   冲积沉积物富含矿物质，可用于建筑材料。
3. 3. The alluvium is a layer of sediment that has been washed away by the river.
   冲积层是河流冲刷掉的沉积层。