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regional activity |
地区活动 : 27 phrases in 11 subjects |
Aviation | 1 |
China | 1 |
Desert science | 2 |
Electronics | 1 |
Engineering geology | 5 |
Hydroelectric power stations | 1 |
International Monetary Fund | 1 |
Management | 1 |
Oil / petroleum | 1 |
Technology | 8 |
United Nations | 5 |