CUG tunnel的用法和樣例：
例句
- In many projects, like the Simplon, for example, a small pilot tunnel is driven before the full diameter of the tunnel is excavated.
在許多隧道工程中，經如辛普龍大隧道，都要在隧道全面開挖前打一個導洞。 - Actually it is not so far from Bad Gastein to Heiligenblut, but there is only one big tunnel connecting these two places, so only taking the train can reach the destination.
其實從巴得嘎斯坦到海立根布魯特不是很遠，但只有一條大隧道將兩地連接在一起，所以非乘火車不可。
