详细解释:ad. 一前一后地, 纵排地
a. 纵排的, 串联的
n. 纵列两匹马拉的马车, 前后纵列的两匹马, 串座双人自行车
【电】 录接
相关词组:
in tandem
英语解释：
名词 tandem:
an arrangement of two or more objects or persons one behind anothera bicycle with two sets of pedals and two seats同义词：bicycle-built-for-two, tandem bicycle