regiment
noun [ C, + sing/pl verb ] uk/ˈredʒ.ɪ.mənt/ us/ˈredʒ.ə.mənt/
（军队的）团;大批，大群（事物或人）
a large group of soldiers, or (more generally) any large number of things or people
Regiments are usually commanded by a colonel and are sometimes made up of soldiers from a particular city or part of the country. 团通常由上校指挥，有时其士兵都来自某个城市或国家的某个特定地区。