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| be at the core (A.Rezvov); be key (для, to: This is key to improving the speed and accuracy of delivery MichaelBurov) | |||
| быть ключевым: 15 phrases in 8 subjects |
| Business | 1 |
| Card games | 1 |
| General | 3 |
| Makarov | 1 |
| Mass media | 3 |
| Politics | 1 |
| Programming | 2 |
| Scientific | 3 |