obstacles: 34 phrases in 17 subjects |
Commerce | 1 |
Communications | 1 |
Construction | 1 |
Earth sciences | 1 |
Economy | 2 |
Education | 3 |
Electric machinery | 1 |
Electronics | 2 |
Finances | 2 |
Labor law | 1 |
Law | 3 |
Life sciences | 1 |
Lighting other than cinema | 1 |
Power lines | 1 |
Social science | 1 |
Taxes | 2 |
Transport | 10 |