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| undeveloped region | |||
| undeveloped area (域); unexploited area (域) | |||
| 未 开发区: 14 phrases in 8 subjects |
| Agriculture | 1 |
| Animal husbandry | 3 |
| Drilling | 1 |
| Economy | 1 |
| Engineering geology | 1 |
| General | 1 |
| Metallurgy | 2 |
| Technology | 4 |
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