detour tunnel

例句：

1. 1. The engineers designed the detour tunnel to divert traffic around the construction site.
   工程师们设计了迂回隧道，以绕开施工现场的交通。
2. 2.During the construction of the new highway, a detour tunnel was built to provide alternative routes for drivers.
   在新高速公路建设期间，为了给司机提供替代路线，建造了一个迂回隧道。
3. 3. The detour tunnel was completed ahead of schedule and allowed for smoother traffic flow during the construction phase.
   迂回隧道提前完成，在施工阶段为交通流提供了更顺畅的路径。