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sapwood [ˈsæpˌwʊd]

n. 边材，白木质;

例句:

  • Sapwood contains xylem vessels, but not as strong as heartwood.
    边材含有木质导管, 但不如中心木质那样坚硬.
  • Thecolor of sapwood of Chinese white poplar among trees has significant difference.
    毛白杨边材材色株间存在显著差异.
  • Sapwood pale colored with red vessel stripes.
    边材色稍浅,仅导管槽带有红色.