要改变陕北经济落后的现状，首先要改变陕北脆弱的生态环境。
The first step to change the economic condition is to improve the fragile ecological environment.
youdao
概要介绍了我国生态环境建设的现状。
The situation of environment construction in China is introduced.
应用推荐
模块上移
模块下移
不移动