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分成包 : 27 phrases in 11 subjects |
| Aviation | 1 |
| Business | 6 |
| Earth sciences | 1 |
| Economy | 1 |
| General | 1 |
| Management | 1 |
| Metallurgy | 7 |
| Space | 1 |
| Technology | 6 |
| Textile industry | 1 |
| United Nations | 1 |
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