教育者把教育观念转化为教育行为，这是教育知识的社会运动。

Educators change the educational knowledge into educational actions, which is the social movement of the educational knowledge.

youdao

所以，创建有充分知识的社会——或者说网络化——是任何一项经济工作所必须的。

And so, creating knowledge affluent societies - or networks - is the need for every economic need.

youdao

没有科学和技术知识，我们的社会就不能存活下来。

Our society could not survive without scientific and technological knowledge.

youdao

But in society today, and we'll talk a bit about security topics -- and such throughout the course, for cryptography -- for encrypting things like your credit card information and bank accounts -- you don't use 32 bits, you don't use 64 bits, you generally use 1024 bits, 4,048 bits.

但在当今的社会上，我们将讨论一点安全方面的知识,贯穿整个课程，密码学-,加密一些像信用卡信息,银行账号之类的东西--你不能用32位，你也不能用64位，你通常要使用1024位，4048位。

哈佛公开课 - 计算机科学课程节选