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单词 tannin
释义 tannin/ˈtænin/n. any of a group of complex organic compounds found in certain tree-barks and oak-galls, used in leather production and ink manufacture 丹宁,鞣质(在某些树皮和栎汁中发现的可用来制革和制墨的有机化合物) [French tanin (as TAN1, -IN)]
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