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项 目区 : 40 phrases in 10 subjects |
| Aviation | 2 |
| Business | 5 |
| Desert science | 2 |
| Economy | 6 |
| International Monetary Fund | 1 |
| Name of organization | 10 |
| Navigation | 3 |
| Project management | 1 |
| Technology | 2 |
| United Nations | 8 |
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