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| long-range research | |||
| long-term studies | |||
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长期 研究 : 22 phrases in 10 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Desert science | 1 |
| Earth sciences | 6 |
| Ecology | 2 |
| International Monetary Fund | 4 |
| Name of organization | 2 |
| Navigation | 1 |
| Technology | 3 |
| United States | 1 |
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