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conversação : 70 phrases in 10 subjects |
| Communications | 25 |
| Earth sciences | 2 |
| Electronics | 12 |
| General | 3 |
| Information technology | 3 |
| Microsoft | 19 |
| Social science | 1 |
| Telecommunications | 1 |
| Telegraphy | 1 |
| Telephony | 3 |
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