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| original ground | |||
| existing ground; natural ground | |||
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原 地面 : 33 phrases in 10 subjects |
| Desert science | 1 |
| Earth sciences | 2 |
| Economy | 1 |
| Engineering geology | 1 |
| Finances | 1 |
| Geology | 1 |
| Hydroelectric power stations | 2 |
| Mining | 1 |
| Oil / petroleum | 2 |
| Technology | 21 |
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