1) environmental and ecological improvement

环境生态的改善
2) the Improvement of ecological environment

改善生态环境
1.
Experiencal enlightenment of the Improvement of ecological environment and the Implement of sustainable development in Japan;
日本改善生态环境和实施可持续发展战略的经验启示
4) improvement of soil environment

土壤生态环境改善
5) protection and improvement of bionomics environment

生态环境保护与改善
6) improving Northwest ecological environment

改善西北生态环境
补充资料:地球生态环境资料在哪
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参考词条