铁路窄轨

例句：

1. 1. The narrow-gauge railway runs through the mountains.
   这条窄轨铁路穿过山区。
2. 2. The narrow-gauge train is much faster than the standard gauge one.
   这种窄轨火车比标准轨火车快多了。
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。