名词中文翻译1
中文翻译：Unknown
同义词：
['bottom', 'stern', 'keel']
例句：
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1. The ship's hull bottom is reinforced with steel plates to prevent damage.
这艘船的船底用钢板加固，以防止损坏。
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2. The boat's hull bottom has been painted a bright blue color.
这艘船的船底被涂成了明亮的蓝色。
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3. The engineer inspected the hull bottom for any signs of wear or damage.
工程师检查了船身底部，看是否有磨损或损坏的迹象。