We used to say that a fourfold increase would be realized if the average growth rate reached 6.5 percent for the 1980s and 7.2 percent for the last two decades of the century as a whole.

• 过去说，如果前十年平均增长速度能够达到百分之六点五，二十年平均增长速度能够达到百分之七点二，翻两番的目标就能够实现。