投资者在满意与警觉之间的摇摆过程，蕴含着波动性的周期性因素。

There is thus a cyclical element to volatility, as investors move from complacency to alarm.

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这是周期性的生命周期，它要求周期性的访问治理解决方案以查看目标是否达到，并且调整治理解决方案。

It is a cyclical lifecycle that enables and requires that the governance solution be revisited periodically to see if the objectives are being met and to adjust the governance solution.

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渔业专家托尼·克恩表示，数量持续下降意味着龙虾种群数量是个长期性的问题，而不是周期性的下降和回弹。

Toni Kern, a fisheries expert, said the consistent decline means the population has long-term problems, not cyclical declines and recoveries.

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if we think about electronegativity as a periodic trend we can just draw our nice periodic table here, and let's separate it into quadrants.

如果我们来思考一下电负性的周期性规律,我们可以把我们漂亮的周期表画在这，然后把它分成四个象限。

麻省理工公开课 - 化学原理课程节选

Often what you'll see is not a table based on this definition, but something that's called the Pauling definition of electronegativity, but it's exactly the same idea and the same trend as this more numerical way to think about what the meaning of electronegativity is.

通常你看到的表格一般都不是基于这种定义的，而是基于,鲍林定义的电负性，但在意义上是相同的，并且满足同样的周期性规律,当和这种这种更数值化地理解电负性的定义,作对比时。

麻省理工公开课 - 化学原理课程节选