Introducing competition of charted right into sewage treatment industry is an effective attempt.

把特许权竞争制引入污水处理行业可以作为一种有效的尝试。

youdao

Introducing competition of charted right into sewage treatment industry is an effective attempt.

把特许权竞争制引入污水处理行业可以作为一种有效的尝试。

youdao