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。

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

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这项政策的好处还有很多；它维持了私人需求，在减少长期失业发生率的同时减少了消费者的不确定性，而美国经济正受到来自长期失业的困扰。

There's a lot to like about the policy; it sustains private demand and reduces consumer uncertainty while reducing the incidence of the long-term unemployment that now afflicts the American economy.

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人们面对不确定性时会更多地储蓄，但他们的消费变得对当前的现金流更加敏感。

People save more in response to uncertainty, but their spending becomes more sensitive to current cash flow.

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