Now introduce uncertainty and precautionary saving effects.

现在，我引入不确定性和预防性储蓄的影响。

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But the more options you have when a rainy day arrives, the less you need precautionary saving.

不过，当雨天来临时，你拥有的应对选择越多，你也就越不需要预防性储蓄。

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Essentially, what the precautionary-saving literature says is that more uncertainty reduces the average propensity to consume (APC), the ratio of consumption to income.

从本质上讲，预防性储蓄理论说的是，更多的不确定性会降低平均消费倾向(APC)，即比消费与收入的比率。

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Essentially, what the precautionary-saving literature says is that more uncertainty reduces the average propensity to consume (APC), the ratio of consumption to income.

从本质上讲，预防性储蓄理论说的是，更多的不确定性会降低平均消费倾向(APC)，即比消费与收入的比率。

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