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| на переднем крае (at the cutting edge Alex89); в авангарде (at the cutting edge Alex89) | |||
| продвинутый (daringly innovative Val_Ships) | |||
| on the cutting edge: 14 phrases in 6 subjects |
| Advertising | 1 |
| American usage, not spelling | 3 |
| Dentistry | 5 |
| Idiomatic | 2 |
| Makarov | 2 |
| Technology | 1 |