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| air cleaner; air filter | |||
| filtro d'aria: 33 phrases in 9 subjects |
| Chemistry | 2 |
| Construction | 1 |
| Environment | 19 |
| General | 1 |
| Health care | 1 |
| Mechanic engineering | 5 |
| Natural sciences | 1 |
| Physical sciences | 1 |
| Transport | 2 |
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