英语词汇“rusty coal”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	rusty coal
释义	Definition of rusty coal in English: rusty coal noun Mining Coal having a brown discoloration owing to atmospheric exposure. Origin Early 19th century; earliest use found in Voice from Coal Mines. Definition of rusty coal in US English: rusty coal noun Mining Coal having a brown discoloration owing to atmospheric exposure. Origin Early 19th century; earliest use found in Voice from Coal Mines.
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Definition of rusty coal in English: