alluvial clay

例句：

1. 1. The alluvial clay is rich in minerals that can be used for building materials.
   冲积粘土富含可用于建筑材料的矿物。
2. 2. The alluvial clay has been found to have unique properties that make it suitable for use in construction.
   冲积粘土被发现具有独特的性质，使其适用于建筑用途。
3. 3. Due to its high water content and potential for pollution, the alluvial clay poses a significant environmental risk.
   由于其高含水量和潜在的污染风险，冲积粘土对环境构成了重大风险。