proper service的用法和樣例：
例句
- Administrations for the transmission of facsimile documents in both directions between subscribers to the telefax service and public facsimile bureaux.
本建議為用戶傳真業務和用戶與公眾傳真局之間雙向傳送傳真文件，制訂主管部門所適用的計費原則和國際結算原則。 - The same department in charge of civil servants at all levels to guide the work of the organs of the civil service management.
各級公務員主管部門指導同級各機關的公務員管理工作。
