porousness

例句：

1. 1. The soil is very porous, allowing water to seep through easily.
   土壤非常多孔，水很容易渗透。
2. 2.The fabric is made from a porous material that allows air to circulate freely.
   这种织物是由一种多孔材料制成的，可以自由地流通空气。
3. 3.The concrete wall was designed with high porosity to allow for easy drainage.
   这个混凝土墙被设计成具有高孔隙率，以便排水容易。