反应速度: 50 phrases in 17 subjects |
Agriculture | 1 |
Architecture | 1 |
Aviation | 2 |
Biotechnology | 1 |
Bridge construction | 1 |
Chemistry | 1 |
Construction | 1 |
Earth sciences | 1 |
Electric machinery | 2 |
Electronics | 2 |
Engineering geology | 2 |
Environment | 2 |
Explosives and Explosive Ordnance Disposal | 3 |
Oil / petroleum | 3 |
Space | 4 |
Sports | 1 |
Technology | 22 |