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自然资源保护 | |||
自然环境保护 | |||
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自然资源保护 |
conservation of natural resources : 18 phrases in 9 subjects |
Animal husbandry | 1 |
Earth sciences | 5 |
Ecology | 1 |
Environment | 1 |
General | 1 |
Hydroelectric power stations | 1 |
Name of organization | 2 |
United Nations | 4 |
Water resources | 2 |