名词
中文翻译：拖曳器
同义词：
['tractor', 'tugboat例句：1. The travolater was used to pull the heavy cargo out of the port.（拖船被用来把沉重的货物从港口拉出来。）']
例句：
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1. The travolater was used to pull the heavy cargo out of the port.
拖船被用来把沉重的货物从港口拉出来。
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2.The travolater was a crucial part of the shipping industry.
拖船是航运业中至关重要的一部分。
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3. The travolater was responsible for maintaining the safety of the vessel during navigation.
拖船负责在航行过程中维护船只的安全。