tunnellite

例句：

1. 1. The tunnel was constructed using a mixture of concrete and sand.
   这个隧道是用混凝土和沙子混合建造的。
2. 2.Tunnelling is a method used to excavate underground tunnels.
   隧道挖掘是一种用于开挖地下隧道的方法。
3. 3. Tunnelling has become increasingly popular in recent years as it offers faster transportation options.
   近年来，隧道挖掘越来越受欢迎，因为它提供了更快的交通选项。