ball race: 25 phrases in 15 subjects |
Armored vehicles | 1 |
Automated equipment | 4 |
Automobiles | 4 |
Cement | 1 |
Construction | 1 |
Energy industry | 2 |
General | 1 |
Mechanics | 1 |
Military | 3 |
Oilfields | 1 |
Production | 1 |
Silicate industry | 1 |
Technology | 2 |
Thermal engineering | 1 |
Transport | 1 |