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| surrounding noise | |||
| background din; environmental noise; environmental noise The sound and the characteristics of sounds from all sources in the surrounding environment; ambient noise | |||
| bruit ambiant: 13 phrases in 7 subjects |
| Communications | 1 |
| Earth sciences | 4 |
| Electronics | 1 |
| Environment | 3 |
| Natural resourses and wildlife conservation | 2 |
| Telephony | 1 |
| United Nations | 1 |