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| 河流污染; 河道污染 | |||
| 河川污染; 河水污染 | |||
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| 河流污染 (人们直接或间接的改变河水或者河的生态系统的生物、物理、化学或放射性的完整性。) | |||
| river pollution: 22 phrases in 4 subjects |
| Ecology | 2 |
| Hydroelectric power stations | 3 |
| Technology | 14 |
| Water resources | 3 |
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