你必须把上下文也给列出来,单这一个无法解释.
就好比,你能解释一下“当“是什么意思么?你能解释一下”太“是什么意思么?好吧我本来想可能是个词组什么的= =原句如下：we were going along a street where a lot of cabs were waiting, one behind another, at a cab stand.首尾相连可以再问一个问题么？记得以前看到过one after another这样的用法，有什么区别吗？one after another是依次按顺序一个一个来，而one behind another讲的是方位，侧重点不同