stairs: 39 phrases in 13 subjects |
Chemistry | 1 |
Construction | 14 |
Electronics | 1 |
General | 12 |
Information technology | 1 |
Loading equipment | 2 |
Mechanic engineering | 1 |
Mexican | 1 |
Municipal planning | 1 |
Natural sciences | 1 |
Spanish | 1 |
Technology | 2 |
United Nations | 1 |