| 单词 | coal rock |
| 释义 | > as lemmascoal rock coal rock n. rock containing deposits of coal; a rock of this type.In quot. 1788 as a proper name. ΚΠ 1788 J. H. Moore Coaster's Compan. 79 From the Skerris lighthouse to the Coal rock. 1799 R. Townson Tracts & Observ. Nat. Hist. & Physiol. 198 (table) Dry clay. Down to the Four-foot Coal Rock. 1867 W. W. Smyth Treat. Coal & Coal-mining 95 The extent of the coal-rocks. 1910 Bull. U.S. Geol. Surv. No. 415. v. 179 From this point on White River the coal rocks bend abruptly westward and..form a narrow hogback on the north side. 2000 Toronto Star (Nexis) 13 Mar. The crumbling buildings at the mine, whose rusty, creaky elevators stand against the dark pyramids of coal rock. < as lemmas |
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