宽轨

例句：

1. 1. The train travels on a narrow gauge railway.
   这列火车行驶在一条窄轨铁路上。
2. 2. The new bridge is designed for use on a narrow gauge railway.
   这座新桥是为窄轨铁路设计的。
3. 3. The narrow gauge railway was built to connect two small towns.
   这条窄轨铁路是为了连接两个小镇而修建的。