/ˈfrɪkʃn ||; ˈfrɪkʃən/noun [U]:
1 the rubbing of one surface or thing against another 摩擦: You have to put oil in the engine to reduce friction between the moving parts. 你要在发动机里加点油，减少移动部位之间的摩擦。
2 friction (between A and B) disagreement between people or groups 个人或团体间的不和或冲突: There is a lot of friction between the older and younger members of staff. 年纪较大的跟年纪较轻的员工间时常有磨擦。