释义 |
● ˌup and ˈdown 🔑 moving upwards and downwards 起伏;上下波动◆ The boat bobbed up and down on the water . 小船在水面颠簸。🔑 in one direction and then in the opposite direction 来回;往复◆ She was pacing up and down in front of her desk . 她在办公桌前踱来踱去。sometimes good and sometimes bad 时好时坏◆ My relationship with him was up and down . 我跟他的关系忽冷忽热。(NAmE , informal ) if you swear up and down that sth is true , you say that it is definitely true 绝对地;肯定地;完全地See also up |