Recent studies of sediment in the North Atlantic's deep waters reveal possible cyclical patterns in the history of Earth's climate.

最近对北大西洋深海沉积物的研究揭示了地球气候历史上可能的循环模式。

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There are many theories and hypotheses that attempt to explain this type of crisis and the dynamics behind the cyclical pattern of history (24).

也有许多理论和假设试图解释这种历史循环背后的危机以及波动的规律（24）。

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This is also the fundamental reason for his cyclical theory of history.

这也是造成其历史循环论的根本原因。

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The market fears its cyclical history in semiconductors, display panels and television sets.

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The U.K. has avoided the misery suffered in parts of the euro zone, but five years into the crisis it is looking as though tough decisions are being avoided by a political elite happy to hide behind the convenient fiction that a slump caused by the biggest credit and housing bubble in the country's history is mainly cyclical.

WSJ: U.K. Is New Recruit on Europe's Sick List

History has shown that economies and markets are cyclical.

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