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| development exploration | |||
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开发勘探 : 34 phrases in 12 subjects |
| Aviation | 1 |
| Business | 1 |
| China | 1 |
| Company name | 3 |
| Earth sciences | 8 |
| Economy | 4 |
| Exhibitions | 1 |
| Geology | 8 |
| Oil / petroleum | 2 |
| Technology | 3 |
| United Nations | 1 |
| Water resources | 1 |
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