| 单词 | bog iron ore |
| 释义 | > as lemmasbog iron ore bog iron ore n. a brittle, porous variety of brown haematite found in bogs. ΘΚΠ the world > the earth > minerals > ore > [noun] > metal ore > iron ore > bog bog-mine1590 bog-mine-ore1764 bog ore1772 bog iron ore1789 swampy iron ore1796 morassy iron ore1801 morass ore1805 black ram1808 limonite1823 swamp-ore1839 1789 A. Mills in Philos. Trans. (Royal Soc.) 80 89 Bog iron ore is met with in the mosses. < as lemmas |
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