铁道隧道 meaning in English

railroad tunnel

Qinling mountains tunnel is our country ' s longest single track railway tunnel at present , in first of similar specialty tunnel of asia , occupying front row too in the specialty tunnel of the world , it is the milestone of the railway tunnel of our country
秦岭隧道是我国目前最长的单线铁路隧道，为亚洲同类山岭特长隧道之首，在世界特长隧道中也居于前列，是我国铁道隧道建设史上的里程碑。