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We are fortunate that it is,because building new educational systems there and putting enough people through them to improve economic performance would require two or three generations.

systems 教育制度

economic performance 经济效益

主干： We are fortunate

that 从句作 fortunate 的补语：that it is

原因状语从句：because building new educational systems there主语1 and并列主语 putting enough people through them to improve economic performance主语2 would require two or three generations.

参考译文：我们很幸运这种传统的观点是错误的，因为在贫困国家（there）建立新的教育制度，并通过这些教育制度（them）,培养足够的劳动力来提高经济效益需要两三代人的努力。