guò / qù / yóu / wù / shì / chéng / shì / gōng / gòng / fú / wù / de / zhòng / yào / zǔ / chéng / bù / fèn

过去，邮务是城市公共服务的重要组成部分。

In the past, postal services were an important part of urban public services.