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起始线 : 31 phrases in 11 subjects |
Automobiles | 1 |
Aviation | 2 |
Boxing | 2 |
Business | 1 |
Electric machinery | 2 |
Electronics | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 3 |
Metallurgy | 1 |
Space | 2 |
Technology | 15 |