adj.凸起的；碰撞的
动词bump的过去式和过去分词形式.
She bumped her head in the doorway and swore loudly. 她的头撞到门框上，大骂了一声。
My bike bumped over the ruts. 我的自行车在凹凸不平的车辙道上颠颠簸簸。
The bus bumped into the back of the car. 公共汽车砰的一声撞上了一辆汽车的後部。
The old bus bumped along the mountain road. 旧公共汽车沿著山路颠簸行驶。
I've bumped my knee on the wall. 我的膝盖撞上了墙壁。
The car bumped and his forehead hit the glass. 汽车颠簸了一下，他的前额撞到了玻璃上。
The car bumped on the uneven surface of the gravel road. 汽车在高低不平的砾石路面上颠簸着。
We bumped up and down along the gravel path. 我们沿砾石小路颠簸而行。
