教科书出版商将教授、教师和学生联系在一起，而开放式电子教科书和开放式教育资源等替代方式根本无法做到这一点。
Textbook publishers connect professors, instructors and students in ways that alternatives, such as open e-textbooks and open educational resources, simply do not.
它们曾经采取开放式教育资源在另一个机构产生课堂使用？
Have they ever adopted an open education resource produced at another institution for in-class use?
它们曾经采取开放式教育资源在另一个机构产生课堂使用？
Have they ever adopted an open education resource produced at another institution for in-class use?
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