translation.en: So, it lets you take this ecosystem in its primordial state of all this content, all the pages you've torn out of books, and create highly sophisticated learning machines: books, courses, course packs.
translation.zh: 因此，它让你把这个生态系统， 以其原生状态呈现，所有这些内容， 所有从书本中撕开的书页 然后创造出这种高度复杂的学习机器，是不是？ 书籍，课程，课程包……。