上下

❶high and low; old and young
❷from top to bottom;up and down
❸relative superiority or strength
❹about;nearly; or so; or thereabouts
❺go up and down
大河～，顿失滔滔。(毛泽东词《雪》)And up and down the Yellow River,all the endless waves are lost to sight.(Mao Zedong’s poem Snow)/两个球队的实力不相～。The two teams are equally matched./举国～whole(or entire)nation; whole country