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| 81. | refine sugar [oil, metals] |
| 精制 [精炼,提炼] 糖 [油,金属] |
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| 82. | Kerosene is a by-product of petroleum refining. |
| 煤油是提炼石油的副产品。 |
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| 83. | gold ,unrefined or refined in unwrought forms, non-monetary (excl. blanks of articles) |
| 提炼或未提炼的黄金,未段造形态,非货币（不包括制品坯料） |
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| 84. | an oil obtained from tuna. |
| 从金枪鱼中提炼的油。 |
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| 85. | Deficient in taste, delicacy, or refinement. |
| 不优雅的，粗鲁的品味、格调或教养不高的 |
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| 86. | A miner extracts gold from the earth. |
| 矿工从泥土里提炼黄金。 |
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| 87. | Chemical preparations for facilitating the alloying of metals |
| 提炼金属合金的化学制剂 |
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| 88. | They distilled alcohol from grain |
| 他们从谷物中提炼酒精。 |
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| 89. | pig iron made entirely from ore. |
| 完全由矿石提炼的生铁。 |
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| 90. | The Chemists have tinkered with heat and metal catalysts to refine their materials. |
| 化学家摆弄热和金属催化剂来提炼。 |
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