通货紧缩缺口（Deflationary gap) 指实际总需求水平低于充分就业时的国民收入水平所形成的缺口。 在存在通货紧缩缺口的情况下，社会对商品和劳务的需求的价值低于在充分就业条件下所能够生产的价值。
有什么关系？只要缺口持续存在，通货紧缩就应该加剧。
As long as the gap persisted, deflation should have accelerated.
通货紧缩发生时，那些资助未来退休金的公司和公共实体的名义收入会减少，这引发了在资产和负债之间的另一个潜在的缺口。
If it occurs, it will cut the nominal incomes of those (companies, public-sector bodies) that have to fund future pensions, creating another potential gap between assets and liabilities.
要估测产出缺口的大小，及其可能引发通货紧缩的威胁有多大，并不容易。
Estimating how big the output gap is, and how much of a deflationary threat it still poses, is not easy.
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