Wú / guǐ / diàn / chē / bù / xū / yào / pū / shè / tiě / guǐ / yīn / cǐ / jiàn / shè / chéng / běn / xiāng / duì / jiào / dī

无轨电车不需要铺设铁轨，因此建设成本相对较低。

Trackless electric buses do not require rails, so their construction costs are relatively low.