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| air-polluting | |||
| 空气 污染的: 31 phrases in 11 subjects |
| Automobiles | 4 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| Management | 1 |
| Refrigeration | 4 |
| Technology | 13 |
| United Nations | 3 |
| Ventilation | 1 |
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