- n. 两匹马前后纵列拉的双轮马车;串座双人自行车
- ad. 一前一后地
- a. 一前一后的
以上来源于:《英汉大辞典》
n.
- a bicycle with seats and pedals for two riders, one behind the other.
- a carriage driven by two animals harnessed one in front of the other.
- a group of two people or machines working together.
adv.
one behind another.Phrase
- in tandem
- alongside each other; together.
- one behind another.
Etymology
C18: humorously from L., lit. ‘at length’.
以上来源于:《简明牛津英语词典》