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自1993年以来，使用过微软Excel的人可能都有涉及过VBA（或Visual Basic应用程序）脚本。因为自那年以后Excel中添加了VBA支持，允许用户在Excel中创建自动化的任务和功能，以拓展该软件的潜力。现在，MIT的两名学生使用跨平台脚本语言Python，创建了一个名为<a href ...

Imagine you are taking a biology course. You're studying for an exam and would like to revisit the professor's explanation of RNA interference. Fortunately, a digital recording of the lecture is ...

While it is becoming increasingly common (and easy) for lectures to be placed online as videos or podcasts, such media can often be very limited in their utility. For example, I missed a lecture last ...

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