It is through decades of hard work that China has progressed to a new stage.

经过几十年的不懈努力，中国已经发展到一个新的阶段。

youdao

It is through decades of hard work that China has progressed to a new stage.

经过几十年的不懈努力，中国已经发展到一个新的阶段。

youdao