bump against things on exery side (as in a room full of furniture); push and bump against one another (as in a crowd) ❍ 大卡车太挤，我们只能站着。当汽车在崎岖不平的路上行使的时候，我们常常～的。The lorry was so crowded that we had only standing room and when it went on the rugged and rough roads,we bumped against one another very often.