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| 71. | Noble or high status. |
| 贵族地位或高贵地位。 |
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| 72. | disubstitution product |
| 双取代物 |
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| 73. | eletronegative substituent |
| 电负性取代基 |
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| 74. | quality of site |
| 地位 |
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| 75. | elimination of group |
| 消去取代基 |
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| 76. | would be a good enough substitute for coffee. |
| 完全可以取代咖啡。 |
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| -- 来源 -- 汤姆?索亚历险记 - The Adventures of Tom Sawyer Chapter 14 (2) |
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| 77. | tetra substitution product |
| 四取代产物 |
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| 78. | Then the telegram was replaced by the telex machine, which was followed by the facsimile. |
| 后来电报被电传机取代，后者又被传真机所取代。 |
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| 79. | substituent effect |
| 取代基效应 |
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| 80. | It has replaced the powdered tea in ordinary consumption, though the latter still continues to hold its place as the tea of teas. |
| 虽然现在的日常消费中，粉茶已被泡茶完全取代，但其茶之王的地位依旧。 |
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