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单词 midrib
释义

WordReference Random House Unabridged Dictionary of American English © 2024
mid•rib  (midrib′),USA pronunciation n. [Bot.]
  1. Botanythe central or middle rib of a leaf.
  • mid- + rib1 1690–1700

Collins Concise English Dictionary © HarperCollins Publishers::
midrib /ˈmɪdˌrɪb/ n
  1. the main vein of a leaf, running down the centre of the blade
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