The first step to change the economic condition is to improve the fragile ecological environment.

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。

youdao

The first step to change the economic condition is to improve the fragile ecological environment.

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。

youdao