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| вредный агент | |||
| 有害 物质 有害物: 19 phrases in 9 subjects |
| Automobiles | 1 |
| Business | 1 |
| Chemistry | 1 |
| Environment | 4 |
| General | 6 |
| Oil and gas | 1 |
| Oil processing plants | 1 |
| Technology | 1 |
| United Nations | 3 |
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