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Then the double bubble turned into double trouble when both burst at the same time.

尔后，随着这两种泡沫的同时破裂，双重泡沫便转化为双重麻烦。

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The Double Bubble sports a wide, downward-sloping nose which airflow pushes up, so its tail wings can be much smaller.

“双泡沫”机头部宽大、向下倾斜，导致气流上升获得升力，所以它的尾翼可以更小。

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In the case of the U.S. economy now, the double-whammy of wealth shocks from the real-estate bubble and the stock-market crash has made consumers understandably cautious.

WSJ: Hal Varian: Boost Private Investment to Boost the Economy

As we have noted in past Monetary Watch commentaries, the run-up to the now infamous housing bubble turn credit implosion turn Great Recession saw a string of 36 months of double digit growth.

FORBES: Headline Monetary Aggregates for October

To put those numbers into perspective, the run-up to the now infamous housing bubble turn credit implosion turn Great Recession saw a string of 36 months of double digit growth for a cumulative increase of 48%.

FORBES: Headline Monetary Aggregates, Where We Are