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natural pollution
| source
| natural pollution | |
| ecol. | 自然污染 |
| source | |
| gen. | 本; 来源 |
| hydroel.st. | 源头; 源点 |
| met. | 起源; 原因; 成因 |
| semicond. | 源区 |
| |||
| 自然污染 | |||
| 天然污染 | |||
|
natural pollution source : 15 phrases in 4 subjects |
| Ecology | 2 |
| Technology | 10 |
| Water resources | 1 |
| Wind Energy | 2 |
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