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| 排放气体: 35 phrases in 11 subjects |
| Automobiles | 1 |
| Compressors | 1 |
| Ecology | 1 |
| Electronics | 4 |
| Explosives and Explosive Ordnance Disposal | 13 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Nautical | 2 |
| Technology | 3 |
| United Nations | 2 |
| Wind Energy | 5 |
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