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| 防污染: 330 phrases in 35 subjects |
| Agriculture | 3 |
| Architecture | 1 |
| Automobiles | 3 |
| Aviation | 3 |
| Business | 7 |
| Chemistry | 1 |
| China | 15 |
| Construction | 1 |
| Drilling | 1 |
| Earth sciences | 12 |
| Ecology | 32 |
| Economy | 1 |
| Electronics | 8 |
| Engineering geology | 3 |
| Environment | 10 |
| General | 5 |
| Hydroelectric power stations | 4 |
| International trade | 2 |
| Logistics | 2 |
| Mechanics | 2 |
| Metallurgy | 17 |
| Mining | 2 |
| Name of organization | 12 |
| Nautical | 14 |
| Oil / petroleum | 11 |
| Patents | 1 |
| Rail transport | 1 |
| Shipbuilding | 6 |
| Space | 4 |
| Technology | 114 |
| Textile industry | 6 |
| United Nations | 13 |
| United States | 1 |
| Water resources | 7 |
| Wind Energy | 5 |
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