a roundabout road (especially one that is used temporarily while a main route is blocked)
roundabout way的用法和样例:
例句
I got informed by an indirect way. 我通过迂回的途径得到这个消息。
Because we cannot directly assess the correctness of the preliminary theory, we have to take up this roundabout approach. 之所以采取这样迂回的步骤,是因为我们无法直接判明最初提出的理论是真的是假。