Correct or improve the translation of the following Chinese sent

Correct or improve the translation of the following Chinese sentences.原文：中国作为人类文明发祥地之一，在几千年的历史进程中，文化传统始终没有中断。 译文：As one of the cradles of human civilization, China has all along maintained its cultural tradition without letup in its history of several thousands years.改译：
【正确答案】：

AS ONE OF THE CRADLES OF HUMAN CIVILIZATION, CHINA HAS ALL ALONG MAINTAINED ITS CULTURAL TRADITION WITHOUT LETUP IN ITS HISTORY OF SEVERAL THOUSAND YEARS.

【题目解析】：数字的表述，thousands of years 几千年，当没有of的时候，例如： several thousand years中thousand必须是单数。