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美国联邦清洁水法
| 令
| 国家
| 污染物排放
| 消除
| 许可证制度
| 美国联邦清洁水法 | |
| water.res. ecol. | Federal Clean Water Act |
| 令 | |
| gen. | cause people; make one; link; link |
| busin. | link; link |
| interntl.trade. | ream; ream |
| multimed. | ream |
| 国家 | |
| environ. | state |
| 污染物排放 | |
| wind. | pollutant emission |
| 消除 | |
| UN chem. | decontamination |
| 许可证制度 | |
| interntl.trade. | license system |
| |||
| Federal Clean Water Act | |||
| 美国联邦清洁水法: 3 phrases in 2 subjects |
| Technology | 1 |
| Water resources | 2 |
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