名词
中文翻译：楼层
同义词：
['basement', 'floor', 'ground floor']
例句：
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1.The architect designed the building with a focus on its under storey.
建筑师在设计这座建筑时，特别关注了它的底层。
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2.The restaurant has an elegant under storey that is perfect for dining in.
这家餐厅的底层非常优雅，非常适合用餐。
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3.The construction workers were working on the under storey of the building.
建筑工人正在这座大楼的底层施工。