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单词 annual ring
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈan•nu•al ˈring, n. [countable]
  1. Botanya yearly formation of new wood in woody plants that can be seen as a ring on the cross section of a tree trunk.

WordReference Random House Unabridged Dictionary of American English © 2024
annual ring, 
  1. Botanyan annual formation of wood in plants, consisting of two concentric layers, one of springwood and one of summerwood.Also called growth ring, tree ring. 
  • 1875–80

Collins Concise English Dictionary © HarperCollins Publishers::
annual ring n
  1. a ring of wood indicating one year's growth, seen in the transverse section of stems and roots of woody plants growing in temperate climates
    Also called: tree ring
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更新时间:2024/11/11 5:07:54