However, just as seemingly healthy measures, such as taking vitamins, can cause damage if done to excess, so did the Greenspan-era Federal Reserve take recession avoidance too far.

然而，正是那些看起来安全的措施，可能会因为被滥用而造成损害，这跟人体适量摄入维生素是一个道理。因此，格林斯潘时代的美联储在避免衰退方面走的太远了。

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To pursue that worthy goal you need a healthy cash reserve.

为了追逐这个有价值的目标，你需要一个良好的现金储备。

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The unemployment rate has plunged over the past three years to 5.8% from 8.6%, but almost nobody, including the Federal Reserve, thinks the labor market is really that healthy.

在过去三年失业率已从8.6%降至5.8%，但是包括美联储，几乎没有人认为劳动力市场现在是真的健康。

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Millions of acres of Conservation Reserve Land bloomed, supplying a healthy mix of blossoms to thousands of honeybee colonies.

CNN: What's killing the bees

Also, while a healthy economy might initially reassure investors, it also decreases the chance that the Federal Reserve will lower rates before the end of 2007 -- stable or even higher rates could worsen credit problems, especially in the battered U.S. housing sector.

FORBES: In Europe, Risk Aversion

Fueling the growing confidence in stocks is a sense that the U.S. economy is healthy enough that recession isn't a concern but not so strong that the Federal Reserve will pull back on its aggressive measures to ease monetary policy.

WSJ: Dow Closes Above 15000