up and down的意思

基本释义

• 上上下下

  to a higher position and then a lower position, several times

例句

1. The escalator wafts us up and down every day.

   自动扶梯天天送我们上上下下。

2. What you do is squat up and down really fast.

   你 所要做的就是真正快速地上下蹲坐。

近义词