数字教科书正在改变许多学生的学习方式。

Digital textbooks are transforming the way many students learn.

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由于数字学习使用电脑或智能手机，长时间盯着屏幕可能对你的眼睛有害。

As digital learning uses computers or smartphones, watching the screen too long may be bad for your eyes.

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当年幼的孩子学习计算机科学时，他们会知道，计算机科学不仅仅是一串令人困惑、无穷无尽的字母和数字，而是一个开发应用程序、创建艺术作品或检验假设的工具。

When younger kids learn computer science, they learn that it's not just a confusing, endless string of letters and numbers—but a tool to build apps, or create artwork or test hypotheses.

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So we've looked at how to solve square root we've, looked at two problems, I've tried to instill in you this sense of paranoia which is so valuable, and now we're going to pull back Python and return to something much simpler than numbers, and that's Python. All right?

我们已经研究了如何去求平方根,研究了两种方法,我一直在尝试着给你们逐渐灌输,要偏执的理念，这样的理念非常有价值，现在我们回过头来去学习一些,比数字更简单的东西，也就是,对不对？数学问题很难？

麻省理工公开课 - 计算机科学及编程导论课程节选

But if we know that 65 is the int that maps to the capital letter "A," we've already seen verbally that you can convert letters to numbers and numbers to letters, and so here's the syntax with which we'll soon be doing that.

如果我们知道65是个整型数，对应的是,大写字母“A“，我们已经口头地说明,我们可以把数字转换为字符，字符转化为数字，所以这里就是我们将要学习的一种语法。

哈佛公开课 - 计算机科学课程节选