两者都对提升潜在增长率有帮助。
失业增长是增长低于潜在增长率的很好的征兆。
A rise in unemployment is a good signal that growth has fallen below potential.
不幸的是在金融危机之前，美国的潜在增长率前景就长期暗淡。
Unfortunately, the outlook for America's potential growth rate was darkening long before the financial crisis hit.
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