1. Experience of the Great Depression reveals that economic downturns can last a long time, and that markets can rebound sharply but sometimes ephemerally.
大萧条的经历表明，经济下滑可能会持续很长时间，这期间市场可能会大幅反弹，但通常只是暂时的。
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2. Experience of the Great Depression reveals that economic downturns can last a long time, and that markets can rebound sharply but sometimes ephemerally.
