| 单词 | bullion-coal |
| 释义 | > as lemmasbullion-coal bullion-coal n. local name of a particular seam. ΚΠ 1881 E. Hull Coal-fields Great Brit. (ed. 4) 204 Amongst the strata overlying the ‘Upper-foot’, or ‘Bullion-coal’, marine fossils occur. < as lemmas |
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