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单词
boneblack
释义
WordReference Random House Unabridged Dictionary of American English © 2024
bone•black
(bōn
′
blak′),
USA pronunciation
n.
Chemistry, Fine Art
a black, carbonaceous substance obtained by calcining bones in closed vessels, used as a black pigment, a decolorizing agent, etc.
Also,
bone
′
black′.
bone
1
+
black
1805–15
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更新时间:2026/1/21 20:38:17