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| 81. | coin a word; invent a new ;ase |
| 发明新字 |
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| 82. | cognate invention |
| 同族发明 |
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| 83. | application inventio |
| 应用发明 |
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| 84. | government invention |
| 政府发明 |
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| 85. | Printing was invented in China as early as868 AD. |
| 早在公元868年中国就发明了印刷术。 |
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| 86. | certificate of invention |
| 发明证书 |
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| 87. | patent for invention |
| 发明专利权 |
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| 88. | make an invention |
| 发明;杜撰 |
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| 89. | inventive concept |
| 发明构思 |
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| 90. | But later， people developed a way of printing， using rocks. |
| 但是以后，人们利用石块发展了印刷术。 |
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