push-pull port tug

例句：

1. 1.The push-pull port tug was used to transport goods across the river.
   推拉式拖车被用来将货物从河的这一边运到那一边。
2. 2.The push-pull port tug is a popular mode of transportation for cargo ships.
   推拉式拖车是货船常用的货物运输方式。
3. 3. The push-pull port tug was designed to be easy to operate and maneuver in tight spaces.
   推拉式拖车设计得易于操作和在狭小空间内操控。