拖曳者

例句：

1. 1. The tugboat pulled the boat out of the harbor safely.
   拖船安全地把船从港口拖了出来。
2. 2. The tugboat was used to transport cargo from port to port.
   拖船用于将货物从港口运往港口。
3. 3. The tugboat was a critical part of the shipping industry.
   拖船是航运业的关键部分。