There are few books which it is more difficult to exhaust and few inregard to which there is more to be gained from renewed interpretation bydifferent minds working under different conditions.
用有道翻译的结果：没什么书比这更难于通读，也没什么书比这更能让不一样的人在不一样的条件下工作，通过重新讲解而有所收成。
对句子里面的which使用方法实在不理解，后面的那个to which也挺迷的，不像是定语从句，但which还能引导其他的从句吗？请教各位老师这事那种情况。
谢谢！！
few books which it is more difficult to exhaust 关系代词指代books, 在从句中作不定式toexhaust的宾语。不定式短语为定语从句的真的主语。
few in regard to which there is more to be gainedfrom renewed interpretation by different minds working under differentconditions.
few=few books. 关系代词指代few，作复合介词in regardto的宾语。in regard to which是定语从句的状语。（有道翻译对这个定语从句的翻译有误，我就不纠正了。你了解定语从句结构就能了。）
