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TOEFL IELTS BNC: 15977 COCA: 13555

Something that is porous has many small holes, so liquid or air can pass through, especially slowly.多孔的;能渗漏的

porous soil with good drainage有良好排水系统的渗漏性土壤
porous brick walls多孔砖墙
a porous polymer membrane多孔聚合物膜

not protected enough to stop people going through多漏洞的,松懈的

The border in this region is porous and many refugees have simply walked across.这个地区的边界管理很松懈,许多难民很容易就越过了。
TOEFL IELTS BNC: 15977 COCA: 13555
TOEFL IELTS BNC: 15977 COCA: 13555
TOEFL IELTS BNC: 15977 COCA: 13555
porous
Words used to describe properties of substances: absorbent, astringent, harsh...
Not effective or useful and not working correctly: useless, ineffective, inefficient...

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