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| pedosphere | |||
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土圈 : 20 phrases in 9 subjects |
| Bridge construction | 1 |
| Construction | 1 |
| Engineering geology | 1 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 1 |
| Soil science | 1 |
| Technology | 10 |
| United Nations | 3 |
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