a magazine or newspaper published at regular intervals
期刊。
occurring or appearing at intervals; occasional
不时出现(或发生)的;偶尔的
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she took periodical gulps of her tea .她时不时地猛喝一大口茶。
(of a magazine or newspaper)published at regular intervals
(杂志,报纸)定期出版的
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Britain's best periodical art magazine .英国最好的定期出版的艺术杂志。
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periodicaln.期刊
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periodicadj.间歇的;周期(性)的;时而出现的;元素周期表的;元素化学性能变化周期的;完整句的