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经济性 : 136 phrases in 16 subjects |
Aviation | 2 |
Business | 36 |
Ecology | 3 |
Economy | 6 |
Electronics | 9 |
Finances | 2 |
General | 35 |
Geology | 1 |
International Monetary Fund | 7 |
Law | 1 |
Medical | 12 |
Name of organization | 1 |
Statistics | 2 |
Technology | 15 |
United Nations | 2 |
Water resources | 2 |