A Pearson spokesperson told BuzzFeed News that "digital materials are less expensive and a good investment" that offer new features, like audio texts, personalized knowledge checks and expert videos.
培生集团的一名发言人告诉BuzzFeed新闻，“数字材料更便宜，是一项不错的投资”，它提供了音频文本、个性化知识检查和专家视频等新功能。
It's important to note that the Library of Congress is quite adept with the preservation of digital materials, as it's been handling these types of projects for more than a decade.
值得一提的是，国会图书馆的专长是保存数字材料，因为它有十几年处理这类项目的经验。
It's important to note that the Library of Congress is quite adept with the preservation of digital materials, as it's been handling these types of projects for more than a decade.
值得一提的是，国会图书馆的专长是保存数字材料，因为它有十几年处理这类项目的经验。
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