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周转 时 间 : 58 phrases in 18 subjects |
Automobiles | 1 |
Aviation | 1 |
Business | 9 |
Commerce | 1 |
Drilling | 1 |
Ecology | 1 |
Electronics | 5 |
Engineering geology | 1 |
Exhibitions | 1 |
Finances | 1 |
Information technology | 1 |
Logistics | 1 |
Marketing | 1 |
Rail transport | 5 |
Space | 3 |
Technology | 19 |
Telecommunications | 1 |
United Nations | 5 |