![]() |
| |||
ecological improvement | |||
ecologic construction; ecological construction |
生态 建设 : 10 phrases in 6 subjects |
Earth sciences | 1 |
Ecology | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 1 |
Technology | 2 |
Water resources | 1 |