第二个因素要更重要的多：如果美国的增长率保持在2007 - 2009年水平，GDP排名几乎无足轻重。
The second element is far more important: If American growth remains at the 2007-2009 level, GDP rankings will hardly matter.
工资增长幅度加大是一个原由；其他的因素包括17年以来最快的货币供给增长率（本周报道）。
The prospect of higher wage increases is one justification; others include the fastest money-supply growth for 17 years, reported this week.
但是随着中国经济的增长——从1998年到2009年增长为原来的五倍——威胁防洪系统的因素发生了改变。
But as the Chinese economy has grown -it quintupled between 1998 and 2009 -the nature of the threat to river systems has changed.
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