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| 公务电话机 | |||
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office telephone : 30 phrases in 9 subjects |
| Communications | 5 |
| Electronics | 5 |
| General | 1 |
| Metallurgy | 1 |
| Multimedia | 1 |
| Project management | 1 |
| Rail transport | 1 |
| Technology | 11 |
| Telecommunications | 4 |
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