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| 21. | mineral deposits, resources, wealth, etc. |
| 矿藏、 矿物资源、 矿物财富. |
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| 22. | Several（几个、个别、单独） severe（严格/重、剧烈） federal（联邦、同盟） generals drank the mineral（矿物/石） water on the miner's |
| 好几个严厉的联邦将军在矿工的葬礼上喝了矿泉水。 |
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| 23. | rare and rare earth metal ore deposit |
| 稀有和稀土金属矿床 |
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| 24. | A rare silver-white to gray mineral, cobalt sulfarsenide, CoAsS, that is a cobalt ore and is used in ceramics. |
| 砷钴矿一种银白色到灰色的稀有矿物，硫化砷钴，CoAsS，是一种钴矿石，用于陶瓷 |
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| 25. | chemistry of rare radioelements |
| 稀有放射元素化学 |
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| 26. | of or containing or derived from minerals. |
| 矿物的、含有矿物的或者源自矿物的。 |
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| 27. | Endangered Species Advisory Committee |
| 保护稀有动植物咨询委员会 |
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| 28. | The mineral yield obtained by working an ore. |
| 矿物采矿所得的矿物 |
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| 29. | It also has some rare collections. |
| 还有些稀有收藏品。 |
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| 30. | conservation of rare plants |
| 珍贵稀有植物的保护 |
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