原有的交通可以走辅道，而且桥下的换填土将来还可以再用来做桥梁的引道。

Traffic is maintained on bypasses, and fill from the bridge onstruction is reused to build the bridge approaches.

youdao

原有的交通可以走辅道，而且桥下的换填土将来还可以再用来做桥梁的引道。

Traffic is maintained on bypasses, and fill from the bridge onstruction is reused to build the bridge approaches.

youdao