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| air quality The degree to which air is polluted; the type and maximum concentration of man-produced pollutants that should be permitted in the atmosphere | |||
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| air quality | |||
| ποιοτητας του αερα: 21 phrases in 5 subjects |
| Environment | 15 |
| General | 1 |
| Natural sciences | 1 |
| Politics | 3 |
| Religion | 1 |