light locomotive kilometers

例句：

1. 1.The train travels at a speed of 20 kilometers per hour.
   火车以每小时20公里的速度行驶。
2. 2.The city is known for its extensive network of light rail lines.
   这个城市以其广泛的轻轨线路而闻名。
3. 3. The new subway line will extend the total distance covered by the light rail system by 5 kilometers.
   新的地铁线路将使轻轨系统覆盖的总距离增加5公里。