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| natural earth; natural soil | |||
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天然土 : 61 phrases in 12 subjects |
| Automobiles | 1 |
| Construction | 1 |
| Desert science | 1 |
| Ecology | 1 |
| Economy | 1 |
| Engineering geology | 2 |
| General | 2 |
| Hydroelectric power stations | 4 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 42 |
| Textile industry | 2 |
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