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durée moyenne (Sergei Aprelikov) |
средняя продолжительность: 29 phrases in 13 subjects |
Astronautics | 3 |
Aviation | 2 |
Biology | 2 |
Business | 2 |
Education | 1 |
General | 3 |
Hydraulic engineering | 1 |
Law | 1 |
Mathematics | 1 |
Medical | 5 |
Statistics | 2 |
Technology | 1 |
Радиоактивное излучение | 5 |