名词中文翻译
中文翻译：龙骨线
同义词：
['keel', "keelback例句：1. The boat's keel line is exposed to the waves.（这艘船的龙骨暴露在波浪中。）"]
例句：
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1. The boat's keel line is exposed to the waves.
这艘船的龙骨暴露在波浪中。
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2.The crew had to repair the keel line before they could sail again.
船员们不得不在再次航行前修理龙骨线。
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3.The keel line was used as a guide for the ship's course.
龙骨线被用作船只航向的指南。