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单词 coal smut
释义

coal smut

noun
1Particulate coal, often mixed with earth, found as a layer above a coal deposit (now rare ).
2Coal particles or soot produced by a coal fire, coal-burning locomotive, etc.; a particle of this.

Origin

Early 18th century; earliest use found in John Morton (1671–1726), naturalist.

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更新时间:2024/12/23 14:59:07