impact1/ˋImpækt; ˈImpækt/n 1 [C,U] the effect or influence that something or someone has 影响﹐作用: +of the environmental impact of car use 使用汽车对环境的影响+on/upon He had a big impact on my life. 他对我的生活产生了很大影响。2 [singular 单数, U] the force of one object hitting another, or the moment when they touch 碰击(力)﹐撞击(力): The impact of the crash spun the car round. 相撞时产生的撞击力让车子掉了个头。on impact The plane's wing was damaged on impact. 飞机的机翼因碰撞而受损。
impact2/Imˋpækt; Imˈpækt/v [I,T] especially AmE to have an effect on someone or something【尤美】(对…)产生影响: +on/upon How will the changes impact on us? 变革将会如何影响我们?