我们居住在城市中,最让人烦恼的就是拥堵的交通线。不过,有一种交通工具是永远都不会堵车的,那就是轨道交通。轨道交通通常包括地铁和轻轨,乘坐过地铁和轻轨的同学都知道,轨道交通不受地面交通状况和自然条件的影响,大大拓展了城市空间。轨道交通有着运量大、不阻塞、噪声小、无污染、安全舒适、节约能源等许多优点。 We live in the city, the most annoying is the congestion of the traffic. However, there is a traffic jam will never be, that is, rail transit. Rail transit usually includes subways and light rail. Students who have taken MRT and LRT know that rail transit is not affected by ground traffic conditions and natural conditions, greatly expanding urban space. Rail transit has many advantages such as large volume, non-blocking, low noise, no pollution, safe and comfortable, energy saving and so on.