名词
中文翻译：Unknown
同义词：
['recurrent', 'cyclical']
例句：
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1. The periodic table of elements is a useful tool for understanding the properties of different elements.
元素周期表是理解不同元素性质的一种有用的工具。
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2. The periodic trends in the market suggest that there will be more innovations in the future.
市场周期性趋势表明未来会有更多创新。
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3. The periodic changes in the weather pattern are often associated with global climate change.
天气模式的周期性变化往往与全球气候变化有关。