tunnel-fiber

例句：

1. 1. The tunnel is made of reinforced concrete, which is a type of tunnel fiber.
   这个隧道是用钢筋混凝土建造的，这是一种隧道纤维。
2. 2.The tunneling process involves using specialized equipment to create the tunnel fibers.
   隧道建设过程涉及到使用专门的设备来制造隧道纤维。
3. 3.Tunnel fibers are used in various applications, including construction and transportation.
   隧道纤维被用于各种应用中，包括建筑和运输。