cyclical economic crisis

例句：

1. 1. The economy is experiencing a cyclical downturn.
   经济正在经历周期性的下滑。
2. 2. The market cycles back and forth between booms and recessions.
   市场在繁荣和衰退之间循环往复。
3. 3.The cycle of life is cyclical, with each phase leading to the next.
   生命的周期是循环的，每个阶段都预示着下一个阶段的来临。