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| 造纸废水 (water) | |||
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paper waste : 30 phrases in 10 subjects |
| Agriculture | 2 |
| Chemistry | 2 |
| Ecology | 5 |
| Economy | 2 |
| Environment | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Plastics | 3 |
| Technology | 12 |
| Water resources | 1 |
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