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| 经济断面 | |||
| 构件的经济截面 | |||
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economic section : 11 phrases in 7 subjects |
| Business | 2 |
| Earth sciences | 1 |
| International trade | 2 |
| Metallurgy | 1 |
| Technology | 3 |
| United Nations | 1 |
| Water resources | 1 |
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