形容词
中文翻译：空洞的
同义词：
['cavity', 'porous', 'hollow例句：1. The lacunar structure of the rock is a result of its formation over millions of years.（岩石的多孔结构是经过数百万年形成的。）2. The soil is very porous', 'allowing water to penetrate easily.（土壤非常多孔，水分可以很容易地渗透进去。）']
例句：
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1. The lacunar structure of the rock is a result of its formation over millions of years.
岩石的多孔结构是经过数百万年形成的。
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2. The soil is very porous, allowing water to penetrate easily.
土壤非常多孔，水分可以很容易地渗透进去。
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3.The hollow space in the wall was filled with sand and bricks.
墙壁中的空洞被沙子和砖块填满。