translation.en: And I said earlier that YouTube is like a classroom to me, and in many ways it is, because here is the instructor -- it's like the old-fashioned classroom: here's the instructor, and then beneath the instructor are the students, and they're all having a conversation.
translation.zh: 我之前说过，YouTube对我而言就像教室， 因为它跟教室很像， 有老师在讲课， 就像传统的课堂： 老师在前面讲， 学生坐在下面听， 而且他们还可以交流。