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单词 writing ink
释义 writing ink
noun
: ink that is to be used with a pen and that may be permanent (as a blue-black ink) consisting essentially of a dispersion of gallic acid or tannin, ferrous sulfate, and often a blue dye in water or nonpermanent containing soluble dyes and including washable inks — compare india ink 2
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更新时间:2024/12/24 2:31:27