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| signe de nombre | |||
| signe de nombre (плюс или минус) | |||
| signe d'un nombre | |||
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знак числа : 21 phrases in 7 subjects |
| Astronautics | 1 |
| Automated equipment | 7 |
| Computers | 2 |
| Information technology | 7 |
| Mathematics | 2 |
| Microsoft | 1 |
| Programming | 1 |
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