It can loosely be described as travel that takes place at regular intervals—often in an annual cycle—that may involve many members of a species, and is rewarded only after a long journey.

它可以比较粗略地描述成是发生在固定周期（这个周期通常是一年一次）的包含某一个物种很多成员的集体旅行，并且只有在长途旅行后才有回报。

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The goal is to stop the cycle of easing rules on banks in good times and tightening them only after a crisis.

VOA: special.2010.09.17

It would be great if the word (economic) cycle only existed in a singular form, and the only cycle we had in the economy was happy expansion.

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But there are kids all over the country who learned about Bionicles only at the end of the cycle or were only halfway through their mania when the line was discontinued.

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But in Bihar, the councils have been through only one electoral cycle.

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