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niveau de contamination; niveau de pollution | |||
degré de pollution | |||
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niveau de pollution |
уровень загрязнения : 15 phrases in 8 subjects |
Chemistry | 1 |
Ecology | 1 |
Environment | 6 |
Medical | 1 |
Meteorology | 2 |
Natural resourses and wildlife conservation | 1 |
Nuclear physics | 1 |
United Nations | 2 |