Businesses have suddenly become a lot glummer.

商业活动突然令人相当悲观。

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The IMF has since become much glummer: this week it forecast growth of just 0.5%.

如今国际货币基金组织已经变得更加悲观：本周预测仅有0.5 %。

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But these fell by 1.9% in February, bringing them closer to glummer private-sector estimates.

但各项零售指标在2月份下降了1.9%，使黯淡的非官方统计数据更趋真实。

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Perhaps most telling, builders have recently become a lot glummer.

ECONOMIST: America's housing market is losing its effervescence

But in as much as the American left is now a coalition of groups that define themselves as the victims of social and economic forces, and in as much as its leaders encourage people to feel helpless and aggrieved, he thinks they make America a glummer place.

ECONOMIST: Why conservatives are happier than liberals