A state is the largest administrative unit in the country.

州是这个国家最大的行政区。

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。

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。

Chongqing is the only such administrative unit in the country's vast-and undeveloped-west.

重庆是在这个国家广大的西部欠发达地区中唯一如此的行政单位。

Otherwise the concept includes virtually every administrative unit exercising public authority.

除此之外，这一概念实际上涵盖了所有行使公共权力的行政单位。