Then you clear out the rubble, line the tunnel  with concrete for stability and watertightness, and repeat for a couple of years until you meet  the people doing the same thing from the other side, Lady-and-the-Tramp-style.

然后，你清理废墟， 用混凝土铺设隧道以确保稳定性和防水性，重复几年，直到你遇到在另一边做同样事情的人，就像《小姐与流浪汉》风格一样。