这块海绵的孔隙率很高，所以吸水性很好。

The high ___porosity of this sponge makes it very absorbent.

这种材料的孔隙率很高，适合用作过滤器。

The high ___porosity of this material makes it suitable for use as a filter.

这种土壤的孔隙率决定了它的保水能力。

The ___porosity of this soil determines its water retention capacity.