vandragger

例句：

1. 1. Thetugboat was used to pull theheavy cargo out of the harbor.
   这艘拖船用来把沉重的货物从港口拖出。
2. 2. The tugboat operator had towork overtime to meet the delivery deadline.
   拖船操作员不得不加班以满足交货的最后期限。
3. 3. The tugboat was acrucial part of the fishing industry in thisregion.
   这艘拖船是该地区渔业产业的关键部分。