英语词汇“hard coal”的意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	hard coal
释义	hard coal 汉语翻译【化】硬煤英语解释：名词 hard coal: a hard natural coal that burns slowly and gives intense heat 同义词：anthracite, anthracite coal
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hard coal