bump into run into knock into
奉贤精锐英语邵老师为你解答：碰撞 Collision,crash,collide碰撞电离 Impact Ionization,collision ionization,ionization by collision轻微碰撞 slight impact
collision英 [kəˈlɪʒn] 美 [kəˈlɪʒən] n.碰撞;冲突;（意见，看法）的抵触;（政党等的）倾轧例句：I saw a head-on collision between two aeroplanes. 我看见两架飞机迎面相撞。It's the collision of disparate ideas that alters one's perspective 是迥然不同的观点之间的碰撞改变了人们的看法。
knock into
