名词
中文翻译：Unknown
同义词：
['top of mast', 'top of the mast', 'mainmast']
例句：
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1. Thecaptain stood at the head of the mast to direct the crew.
船长站在桅杆顶部指挥船员。
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2. The ship'smainmast was damaged in the storm.
风暴损坏了船只的主桅。
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3. The sailors climbed up the mast to checkthe weather forecast.
水手们爬上桅杆查看天气预报。