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| 81. | cyclic substituent |
| 环式取代基 |
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| 82. | substituted aromatic |
| 取代的芳香化合物 |
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| 83. | ring substitution |
| 环上取代作用 |
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| 84. | Home-made goods are edging out imported foreign goods. |
| 国产货正在取代进口货。 |
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| 85. | electrophilic aromatic substitutio |
| 亲电芳香取代 |
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| 86. | gamma substitution |
| 伽马位取代 |
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| 87. | eletrophilic substituent |
| 亲电子取代基 |
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| 88. | donative electron substituent |
| 供电子取代基因 |
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| 89. | internal nucleophilic substitution |
| 分子内亲核取代 |
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| 90. | was replaced with the bang of firecrackers. |
| 又被鞭炮声所取代。 |
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| -- 来源 -- 高中英语(高一上学期适用) 2 - Unit 7 Holidays Challenging Yours |
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