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| 补充反应; 再反应 | |||
| second reaction: 17 phrases in 9 subjects |
| Agriculture | 2 |
| Automobiles | 1 |
| Biotechnology | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| Horticulture | 1 |
| Metallurgy | 1 |
| Surgery | 1 |
| Technology | 7 |
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