reinforcement : 47 phrases in 14 subjects |
Agriculture | 1 |
Construction | 6 |
Education | 3 |
Electronics | 1 |
Environment | 2 |
General | 2 |
Hobbies and pastimes | 1 |
Industry | 3 |
Insurance | 2 |
Materials science | 1 |
Mechanic engineering | 3 |
Medical | 6 |
Metallurgy | 11 |
Transport | 5 |