不过在四大经济体中，美国2011年度的经济增长率预期依然独占鳌头。

But of these four big economies, America is still forecast to have the fastest growth rate in 2011..

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投资者预期持有某货币可获得的收益决定了其对该货币的需求，而预期收益主要受贷款利率和经济增长率的影响。

The demand for a currency depends on the return that investors expect from holding it. That in turn depends largely on the interest rates on offer and on underlying rates of economic growth.

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首先是好消息，根据国际货币基金组织，经过2009年的经济紧缩之后，预期今年全球经济增长率将超过4%。

First the good news: after contracting slightly in 2009, global economic output is expected to grow more than 4 percent this year, according to the International Monetary Fund.

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