名词
中文翻译：下一层
同义词：
['basement', 'floor', 'lower level']
例句：
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1.The lower story of the building is where the offices are located.
这座建筑的底层是办公室所在地。
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2.She moved to a new apartment in the lower story.
她搬到了新公寓的底层。
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3. The lower story of the house has been converted into a small garden.
这所房子的底层被改造成了一个小花园。