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单词 nigrosine
释义
ni·gro·sine (nīgrə-sēn, -sĭn)
n.
Any of a class of dyes, varying from blue to black, used in the manufacture of inks and for dyeing wood and textiles.

[Latin niger, nigr-, black; see nekw-t- in the Appendix of Indo-European roots + -OS(E)2 + -INE2.]
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