词根frict+ion词缀。中文意思是n. 不和，分歧摩擦摩擦力
The force of friction slows the spacecraft down as it re-enters the earth's atmosphere.航天飞机重返地球大气层时因有摩擦力而减慢速度。
Friction between moving parts had caused the engine to overheat.
活动部件的摩擦使发动机过热。
