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| 有机质土; 泥炭黏土 | |||
| 有机粘土; 腐泥 | |||
| 有机淤泥; 有机粉土; 有机质粉土 | |||
| organic silt: 4 phrases in 2 subjects |
| Technology | 3 |
| Water resources | 1 |
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