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Something that is porous has many small holes in it that water and air can pass through.
The local limestone is so porous that all the rainwater immediately sinks below ground.
当地的石灰岩渗透性很强，雨水能很快渗到地下。
Rough porous surfaces will soak up paint more quickly than smooth sealed surfaces.
粗糙多孔的表面将会比光滑封闭的表面吸收更多的油漆。
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