au préalable: 21 phrases in 15 subjects |
Analytical chemistry | 1 |
Armored vehicles | 2 |
Automated equipment | 1 |
Dentistry | 1 |
Environment | 1 |
Law | 2 |
Mathematics | 2 |
Microsoft | 1 |
Mining | 2 |
Natural resourses and wildlife conservation | 1 |
Patents | 2 |
Photography | 1 |
Physics | 1 |
Trucks/Lorries | 2 |
United Nations | 1 |