That was Governor Arnold Schwarzenegger in June, talking about his effort to get schools to use materials available free online. He listed reasons why he thinks digital textbooks make sense.

• 这是加利福尼亚州长阿诺德-施瓦辛格六月份的讲话，他讲到自己努力让学校可以在网上免费使用资料。他列举了数字化教材行得通的理由。