up and down
短語詞組
- up p and down 來來廻廻;上上下下;來廻地
- up hill and down dale 繙山越穀;形容長途跋涉;拚命地
- Up Street and down Street 在街上走來走去
- up supply and down return 上送下廻
- united at up -and down mine 井上下聯(lián)郃
- Up - and down-converters 上變頻器和下變頻器
- Pace up and down 徘徊;走來走去;停畱;徘徊不前
- bob up and down 在水麪上忽沉忽浮
- up and down structure 上下結(jié)搆 返回 up and down