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sound -proof : 40 phrases in 17 subjects |
Automated equipment | 4 |
Automobiles | 1 |
Aviation | 1 |
Aviation medicine | 1 |
Cement | 3 |
Cinematography | 2 |
Construction | 11 |
Ecology | 1 |
General | 3 |
Librarianship | 3 |
Makarov | 2 |
Mass media | 2 |
Nautical | 2 |
Occupational health & safety | 1 |
Oil / petroleum | 1 |
Rail transport | 1 |
United Nations | 1 |