towing airplane

例句：

1. 1.The boat was towing a large cargo ship behind it.
   那艘船拖着一艘大型货船在后面。
2. 2.The car was towing a trailer behind it.
   那辆车拖着一辆拖车在后面。
3. 3. The truck was towing a heavy load of goods across the country.
   卡车正在把沉重的货物从一个国家运往另一个国家。