The growth of knowledge followed a kind of compound-interest law . 知识的增长遵循着一种复利法则。
Libraries made education possible , and education in its turn added to libraries ; the growth of knowledge followed a kind of compound - interest law , which was greatly enhanced by the invention of printing 图书馆使教育成为可能,教育反过来对图书馆有所增益知识的增长遵循复利法则,印刷术的发明又加强了这一法则的作用。