英语翻译The principle of self-improvement has taken varied forms throughout history and is perhaps America'smost successful export.
问题描述：
英语翻译
The principle of self-improvement has taken varied forms throughout history and is perhaps America's
most successful export.
答
自我完善的原则,可能是美国最成功的出口。
答
纵观历史,自我提升的原则有不同的方式,这也许是美国对整个世界最成功的影响啦.
（这里有很多意译的地方）