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地理极 : 30 phrases in 10 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Cartography | 1 |
| Drilling | 1 |
| Earth sciences | 4 |
| Electronics | 1 |
| Geophysics | 2 |
| Oil / petroleum | 2 |
| Space | 5 |
| Technology | 12 |
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