toughening: 68 phrases in 15 subjects |
Construction | 1 |
Cosmetics and cosmetology | 3 |
Diplomacy | 3 |
Ecology | 1 |
General | 10 |
Idiomatic | 1 |
Makarov | 22 |
Mass media | 1 |
Metal science | 3 |
Nanotechnology | 4 |
Polymers | 3 |
Security systems | 3 |
Silicate industry | 10 |
Technology | 2 |
Vulgar | 1 |