A state is the largest administrative unit in the country.

州是这个国家最大的行政区。

youdao

County district is the most extensive administrative unit in China.

县域，是中国分布最为广泛的基本行政区域单元。

youdao

The Environmental Geology Section of the Department is the relevant administrative unit.

该部的环境地质处是相关行政管理单位。

youdao

Perhaps they should also be united in one administrative unit.

ECONOMIST: An insurgency worsens as the government promises peace

Attending to all administrative matters pertaining to the Unit, including the Composition Unit, ensuring the proper and timely preparation of all types of reports, leave plans, shift-work timetables, etc.

UNESCO: Vacancy : Chief of Unit (18/4/2011) (ADM 307 - (P5))

To be sure, some were traders, but most were IT, finance and administrative staff with unique knowledge of the unit's systems.

FORBES