obstacles: 45 phrases in 21 subjects |
Commerce | 3 |
Communications | 2 |
Construction | 1 |
Earth sciences | 2 |
Economy | 2 |
Education | 2 |
Electric machinery | 1 |
Electronics | 2 |
Finances | 4 |
Fishery fishing industry | 2 |
General | 2 |
Isolation | 1 |
Labor law | 1 |
Law | 5 |
Life sciences | 1 |
Lighting other than cinema | 1 |
Politics | 1 |
Power lines | 1 |
Radio | 1 |
Social science | 1 |
Transport | 9 |