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arm-navy air |
陆海空 : 67 phrases in 14 subjects |
Air defense | 4 |
Automobiles | 2 |
Aviation | 28 |
Business | 1 |
Economy | 1 |
Electronics | 11 |
General | 7 |
Military | 1 |
Space | 6 |
Technology | 1 |
Telecommunications | 1 |
Textile industry | 2 |
United Nations | 1 |
United States | 1 |