You can see the website if you want to download a copy of this to practice on it.
如果你们想练习的话,可以到网上自行下载。
麻省理工公开课 - 固态化学导论课程节选
You can just go to Apple's website and download the appropriate link.
你可以登录Apple网站,下载相应链接。
哈佛公开课 - 计算机科学课程节选
应用推荐
模块上移
模块下移
不移动