tractor-trailer train

例句：

1. 1. This tractor-trailer train is designed to transport heavy loads over long distances.
   这辆拖拉机拖车火车设计用来在长途运输中运输重载货物。
2. 2.The farmer used the tractor-trailer train to transport his crops to market.
   这位农民使用拖拉机拖车火车将他的农作物运送到市场。
3. 3. The tractor-trailer train was a crucial part of the transportation network during the early days of the railroad era.
   在铁路时代初期，拖拉机拖车火车是交通网络的关键部分。