breathable: 20 phrases in 12 subjects |
Biology | 1 |
Caspian | 2 |
Clothing | 1 |
Firefighting and fire-control systems | 2 |
General | 3 |
Medical | 2 |
Medical appliances | 1 |
Occupational health & safety | 3 |
Polymers | 1 |
Security systems | 1 |
Technology | 2 |
Textile industry | 1 |