air drain
/ˈɛː dreɪn/noun
1A covered channel round the external walls of a building to prevent damp.
2A device through which air is drained. rare.
Origin
Mid 19th century. From air + drain.
| 单词 | air drain |
| 释义 | air drain/ˈɛː dreɪn/noun 1A covered channel round the external walls of a building to prevent damp. 2A device through which air is drained. rare. Origin |
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