名词
中文翻译：船夫
同义词：
['captain', 'master']
例句：
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1.The boatswain was the first to notice the problem.
船夫是第一个注意到这个问题的人。
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2. He had a long career as a boatswain before he retired.
他在退休前有很长的航海生涯，担任过船夫。
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3. The boatswain was responsible for ensuring the safety of all on board.
船夫负责确保船上所有人的安全。