过去，人口达到里程碑一度曾是可喜可贺的事情。

Once upon a time, the passing of population milestones might have been cause for celebration.

youdao

过去，人口达到里程碑一度曾是可喜可贺的事情。

Once upon a time, the passing of population milestones might have been cause for celebration.

youdao