我17岁时就得到了正规的教育，那就是用树枝在地上练习字母和数字。
There, at age 17, I started my formal education, writing letters and Numbers with sticks in the dirt.
一个评估一篇英文文章的阅读难度的方法，用数字来表示需要读者(英语母语者)具备多少年的正规教育才能读懂这篇文章。
A measure of the readability of a piece of English-language text, expressed as the number of years of formal education thought to be needed to understand the text.
一个评估一篇英文文章的阅读难度的方法，用数字来表示需要读者(英语母语者)具备多少年的正规教育才能读懂这篇文章。
A measure of the readability of a piece of English-language text, expressed as the number of years of formal education thought to be needed to understand the text.
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