to hit sth, especially a part of your body, against or on sth （尤指身体部位）碰上，撞上
Be careful not to bump your head on the beam when you stand up.
当心站起来时头别撞了横梁。
[I, T] to move across a rough surface 颠簸行进
- adv./prep.
The jeep bumped along the dirt track.
吉普车在土路上颠簸着行驶。
~ sth + adv./prep.
The car bumped its way slowly down the drive.
汽车沿车道缓慢地颠簸行进。