| 单词 | tin-gravel |
| 释义 | > as lemmastin-gravel tin-gravel n. gravel containing tin ore, which is obtained by streaming. ΘΚΠ the world > the earth > minerals > mineral sources > [noun] > gravel containing tin tin-stream1855 tin-gravel1874 1874 J. H. Collins Princ. Metal Mining (1875) ix. 55 The deposit of tin gravel at the mouth of the Carnon Valley. < as lemmas |
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