But biologic textbook is not the technical bioscience after all and it can't expound the content by the Numbers.

但是，生物学教材毕竟不是专门的生物科学史，它不能系统地阐述这些内容。

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Broadband access had become ubiquitous, and textbook companies had converted their standard introductory course content into inexpensive, Web-friendly form.

宽带接入无处不在，教科书公司已经将他们的标准入门课程内容转换成便宜的网络友好格式。

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Their use of classroom time expounded on the textbook is still not enough, explain the meaning of to help students understand and grasp the text's focus on content.

他们利用课堂时间对课本中阐述得不够的内容、意义进行讲解，以帮助学员理解掌握课文的重点内容。

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There may be many contributors to a textbook, all of whom who need to be paid rights for the content.

FORBES: The Future of the College Bookstore

In education, we should no longer just provide a textbook, but a service and a similar promise to help raise achievement through course content, software and assessment.

BBC: Viewpoint: Why disruption is good for business

Open Educational Resources typically go beyond the textbook to incorporate interactive project-based learning methodologies that allow individualized, interactive engagement with subject matter content and personalized assessment of progress.

FORBES: How Can Mainstream Education Meet The Needs of Post-Modern Society?