During hyperinflation, the currency became nearly worthless, and people had to carry money in wheelbarrows to buy bread.

hyperinflation 是由前缀 hyper-（表示"过度、超过"）和名词 inflation（通货膨胀）组成的复合词。inflation 来自动词 inflate（使膨胀），这里指货币供应量过度膨胀。 hyperinflation 指极端严重的通货膨胀，通常表现为物价飞涨、货币急剧贬值的经济现象。