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| continuous noise | |||
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| continuous noise | |||
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连 续噪声 : 23 phrases in 7 subjects |
| Air defense | 4 |
| Aviation | 3 |
| Business | 1 |
| Electronics | 3 |
| Otorhinolaryngology | 2 |
| Space | 3 |
| Technology | 7 |
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