名词
中文翻译：期刊的
同义词：
['periodic', 'periodicals', 'periodical', 'periodicity']
例句：
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1. The magazine is published every month.
这本杂志每月出版一次。
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2. The scientist has been publishing his findings in periodic papers.
这位科学家一直在定期发表他的研究成果。
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3. The book is a collection of periodic essays on various topics.
这本书是关于各种主题的定期论文集。