double trailer train

例句：

1. 1. The double trailertrain was the first to arrive at the station.
   双层拖车火车是第一个到达车站的。
2. 2. They used the double trailer train to transport their goods across the country.
   他们使用双层拖车火车将货物运往全国各地。
3. 3. The double trailer train was a popular mode of transportation in the old days.
   双层拖车火车在旧时代是一种流行的交通工具。