名词
中文翻译：循环的
同义词：
['cyclical', 'recurrent', 'cyclic']
例句：
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1. The moon has a 28-day cycle, repeating its phases every 28 days.
月亮有28天的周期，每28天重复其相位。
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2. The weather follows a cyclical pattern of hot and cold seasons.
天气遵循一个周期性的模式，交替出现炎热和寒冷的季节。
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3. The company's annual report shows a cyclical increase in profits.
公司的年度报告显示利润呈周期性增长。