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| 不 溶物质: 19 phrases in 9 subjects |
| Architecture | 1 |
| Desert science | 2 |
| Ecology | 1 |
| Environment | 1 |
| General | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Technology | 7 |
| Water resources | 1 |
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