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| terrain photography | |||
| field observation | |||
| 地形摄影: 32 phrases in 8 subjects |
| Earth sciences | 2 |
| Electronics | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 3 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 21 |
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