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| be professional (visitor); be professional (visitor); work (в какой-либо области) | |||
| be one's area of expertise (Tayafenix) | |||
| be adept at (Alex_Odeychuk) | |||
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prospective specialist (о студенте: Studies based on experience are necessary in order the student as a prospective specialist could learn from own experience  llu.lv bojana) | |||
| быть специалистом: 20 do fraz, 8 tematyki |
| Ekonomia | 1 |
| Idiomatyczny | 2 |
| Literatura | 1 |
| Makarowa | 4 |
| Matematyka | 1 |
| Patenty | 3 |
| Pospolicie | 7 |
| Wojskowość | 1 |