| 单词 | mineral coal |
| 释义 | mineral coal/ˈmɪn(ə)rəl ˌkəʊl/ /ˈmɪn(ə)r(ə)l ˌkəʊl/Now chiefly historical noun Native or mined coal, as distinct from charcoal. Also: †a variety of coal in which there are no traces of plant structure (obsolete ). Origin |
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