If it's mostly silt and clay, it will benefit from the addition of washed sand to help it drain and aerate well.

如果我们考虑的主要是泥沙和粘土，将有利于从另外的水洗砂，以帮助它流失和通气良好。

youdao

If it's mostly silt and clay, it will benefit from the addition of washed sand to help it drain and aerate well.

如果我们考虑的主要是泥沙和粘土，将有利于从另外的水洗砂，以帮助它流失和通气良好。

youdao