kilometre /kIˋlɑmətɚ; ˈkIləˌmiːtə/BrE 【英】; kilometer AmE 【美】n [C] written abbreviation 书面缩写为 km a unit for measuring length, equal to 1000 metres 千米﹐公里〔长度单位﹐等于 1000 米〕
kilometrekilometrekilometres (British) kilometer (American)noun (abbr.km)a measure of length. There are 1 000 metres in a kilometre: They live 100 km from Paris.