| 单词 | rusty coal |
| 释义 | > as lemmasrusty coal rusty coal n. Mining coal having a brown discoloration owing to atmospheric exposure. ΚΠ 1825 Voice from Coal Mines 9 The fine of sixpence for any deficiency in separating, the inferior, or rusty coal, from the superior. 1931 Altoona (Pa.) Mirror 4 Feb. 19/3 (advt.) Best grades mountain coal. Special on Page and Rusty coal. Weight, coal guaranteed. 1972 U.S. Patent 3,700,728 10 In-situ weathered coal from the upper seam of Sheerness Mines, Alberta (locally known as ‘rusty’ coal). < as lemmas |
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