lined tunnel

例句：

1. 1. The engineers were busy lining the tunnel with reinforced concrete.
   工程师们忙于用加固混凝土衬砌隧道。
2. 2.The construction workers had to work in aliner tunnel to avoid collidingwith each other.
   建筑工人不得不在衬砌隧道中工作，以避免相互碰撞。
3. 3.The tunnel was lined with lights that guidedthe way for the rescue team.
   隧道内安装了照明设备，为救援队指引了方向。