A row, range, or layer. Mining, etc. A layer or lode of ore, etc.
| 单词 | θ6342 |
| 释义 | the world > the earth > minerals > mineral deposits > [noun] > course (3) course1778 A row, range, or layer. Mining, etc. A layer or lode of ore, etc. Subcategories:— of tin ore (2) |
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