英语词汇“air drain”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	air drain
释义	air drain air drain [′er ‚drān] (civil engineering) An empty space left around the external foundation wall of a building to prevent the earth from lying against it and causing dampness. air drain An empty space left around the external foundation wall of a building to prevent the earth from lying against it and causing dampness.
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