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单词 underdrain
释义

WordReference Random House Unabridged Dictionary of American English © 2024
un•der•drain  (n. undər drān′;v. un′dər drān),USA pronunciation n. 
  1. Civil Engineeringa drain placed beneath the surface of cultivated fields, streets, etc.

v.t. 
  1. Civil Engineeringto equip or supply with an underdrain or underdrains.
  • under- + drain 1795–1805

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