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单词 subsoil
释义

WordReference Random House Learner's Dictionary of American English © 2024
sub•soil /ˈsʌbˌsɔɪl/USA pronunciation   n. [uncountable]
  1. Agriculture, Geologythe layer of earth immediately under the surface soil.

WordReference Random House Unabridged Dictionary of American English © 2024
sub•soil  (subsoil′),USA pronunciation n. 
  1. Agriculture, Geologythe bed or stratum of earth or earthy material immediately under the surface soil. Also called undersoil. 
  • sub- + soil1 1790–1800

Collins Concise English Dictionary © HarperCollins Publishers::
subsoil /ˈsʌbˌsɔɪl/ n
  1. Also called: undersoil the layer of soil beneath the surface soil and overlying the bedrock
vb
  1. (transitive) to plough (land) to a depth below the normal ploughing level and so break up the subsoil
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