face mask : 64 phrases in 21 subjects |
Astronautics | 4 |
Aviation | 1 |
Aviation medicine | 1 |
Dentistry | 3 |
Firefighting and fire-control systems | 2 |
General | 12 |
Hygiene | 5 |
Idiomatic | 1 |
Logistics | 1 |
Makarov | 1 |
Medical | 9 |
Medical appliances | 4 |
Military | 6 |
Nuclear physics | 1 |
Occupational health & safety | 4 |
Perfume | 4 |
Police | 1 |
Scuba diving | 1 |
Security systems | 1 |
Sports | 1 |
Weapons of mass destruction | 1 |