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河谷地带 | |||
河谷 |
river valley : 28 phrases in 9 subjects |
Desert science | 3 |
Ecology | 1 |
Electronics | 1 |
Engineering geology | 2 |
Environment | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 2 |
Oil / petroleum | 1 |
Technology | 15 |