泥沙等

例句：

1. 1. The beach is covered in soft sand.
   海滩上铺满了柔软的沙子。
2. 2. The old ship sank into the sand.
   旧船沉入了沙子中。
3. 3. The children played in the sandbox.
   孩子们在沙箱里玩耍。