Even more shocking is the fact that the number and rate of im*ment have more than doubled over the past twenty year
问题描述：
Even more shocking is the fact that the number and rate of im*ment have more than doubled over the past twenty years,and recidivism------that is the rate for re-arrest------is more than 60 percent.
句中的have more than doubled如何理解~
答
have doubled
（一段时间以来）翻了一倍
more than修饰doubled,不止,不仅仅.
全句译为：
更令人吃惊的是,过去20年来,入狱人数和入狱率都不止翻了一倍,而且二进宫率（就是再次入狱的比率）已经超过了60%.还可以这样用，哎，英语真奇妙并不是英语奇妙。语言都是很灵活的。 现代汉语也非常奇妙呀！