名词
中文翻译：主帆
同义词：
['main sail', 'mainsail例句：1. The main jib was the first thing to be raised and lowered.（主帆是首先升起和放下的。）']
例句：
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1. The main jib was the first thing to be raised and lowered.
主帆是首先升起和放下的。
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2.The sailors were busy adjusting the main jib to catch the wind.
水手们忙着调整主帆以捕捉风力。
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3.The main jib had been damaged in a storm, so they had to repair it before sailing again.
主帆在一场风暴中受损，所以他们必须在再次航行前修理它。