起伏;上下波動;沿…來來回回
起伏;上下波動
moving upwards and downwards
The boat bobbed up and down on the water.小船在水面顛簸。
來回;往復
in one direction and then in the opposite direction
She was pacing up and down in front of her desk.她在辦公桌前踱來踱去。
時好時壞
sometimes good and sometimes bad
My relationship with him was up and down.我跟他的關係忽冷忽熱。
口語美式
絕對地;肯定地;完全地
if you swear up and down that sth is true, you say that it is definitely true
up and down sth
沿…來來回回
in one direction and then in the opposite direction along sth
I looked up and down the corridor.我來回掃視著走廊。
釋義來自《牛津高階英漢雙解詞典》第 9 版