monotrailer

例句：

1. 1. The monorail is a popular mode of transportation in the city.
   单轨列车是这个城市流行的交通工具。
2. 2.The monorail runs through the center of the city, connecting several important stations.
   单轨列车穿过市中心，连接了几个重要的车站。
3. 3.The monorail provides a convenient and fast way to travel between different parts of the city.
   单轨列车提供了一个方便且快速的在城市不同部分之间旅行的方式。