porous foundation

例句：

1. 1. The foundation ofthe building is made of concrete.
   这座建筑的基础是用混凝土做的。
2. 2. The new road wasbuilt on a porous foundation.
   那条新路建立在一个多孔的基础上。
3. 3. The soilin this area is very porous,which makes it ideal for gardening.
   这个地区的土壤非常多孔，非常适合园艺。