Question

porous 【porous】adj.多孔的Glass is not porous; it doesn't allow liquid to pass through.玻璃是毫无空隙的，液体无法透过它。

Accepted Answer

['pɔːrəs] 
porousfull of pores or vessels or holes
If something is full of tiny holes or openings, you can describe it as porous. A sponge is porous, and if the border between countries is open for anyone to cross easily, it too can be called porous.
You can see the word pore — meaning "a tiny opening" — in porous. When potters make a mug, they use special glazes to seal the porous clay, which otherwise would absorb the liquid you put in the mug. This meaning has expanded so porous can describe any barrier that allows easy passage in and out, like the porous border between two countries that allows residents to move easily between them.
All forms of 'porous' will appear on average once every 3412 pages.poreporousnonporousporosityporousness

Front	porous
Pron	['pɔːrəs]
Back	【porous】 adj.多孔的 Glass is not porous; it doesn't allow liquid to pass through. 玻璃是毫无空隙的，液体无法透过它。
Vocab	porousfull of pores or vessels or holes If something is full of tiny holes or openings, you can describe it as porous. A sponge is porous, and if the border between countries is open for anyone to cross easily, it too can be called porous. You can see the word pore — meaning "a tiny opening" — in porous. When potters make a mug, they use special glazes to seal the porous clay, which otherwise would absorb the liquid you put in the mug. This meaning has expanded so porous can describe any barrier that allows easy passage in and out, like the porous border between two countries that allows residents to move easily between them. All forms of 'porous' will appear on average once every 3412 pages. pore porous nonporous porosity porousness

Porous Liquid Full Holes Tiny Describe Border Countries