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倒 计 时 : 27 phrases in 10 subjects |
Automobiles | 1 |
Aviation | 3 |
Baseball | 1 |
Boxing | 1 |
Electronics | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 2 |
Military | 1 |
Quality control and standards | 1 |
Space | 12 |