/fɔ:ˈmeɪʃn ||; fɔrˈmeʃən/noun1 [U] the act of making or developing sth 形成；组成: the formation of a new government 新政府的筹组
2 [C,U] a number of people or things in a particular shape or pattern 队形；组成方式: rock formations 岩层A number of planes flew over in formation. 几架飞机编队从上空掠过。formation dancing 团体舞