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注 意事项: 29 phrases in 16 subjects |
Agriculture | 2 |
Automobiles | 2 |
Aviation | 1 |
Business | 2 |
Commerce | 1 |
Dentistry | 3 |
Drilling | 1 |
Earth sciences | 2 |
Economy | 1 |
Explosives and Explosive Ordnance Disposal | 3 |
General | 1 |
International trade | 1 |
Metallurgy | 1 |
Refrigeration | 3 |
Shipbuilding | 2 |
Technology | 3 |