reinforcement : 63 phrases in 13 subjects |
Agriculture | 2 |
Construction | 17 |
Electronics | 1 |
Environment | 2 |
General | 1 |
Hobbies and pastimes | 1 |
Industry | 7 |
Labor law | 1 |
Materials science | 2 |
Mechanic engineering | 1 |
Medical | 4 |
Metallurgy | 15 |
Transport | 9 |