英语词汇“coal ball”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	coal ball
释义	coal ball a spherical mass of mineral and plant material embedded in coal beds, ranging in size from that of a pea to that of a boulder. [1735-45]
随便看	névé Nîmes Nü-kua Nürnberg O o' O' o- -o- -o O. o. OA o/a oaf Oahu oak oak apple Oak Creek Oakdale oaken oak fern Oak Forest oak gall Oak Harbor

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