porous
adjective uk/ˈpɔː.rəs/ us/ˈpɔːr.əs/
多孔的;能渗漏的
Something that is porous has many small holes, so liquid or air can pass through, especially slowly.
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
多漏洞的，松懈的
not protected enough to stop people going through
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。