Finally, studies have been done of college yearbook photos looking at people thirty years later.
最后,所做的研究是,30年后大学年鉴上人们的照片。
We have 90 extension school students who are taking the course via distance education, so we have a huge group that will be joining us at the 2010 CS50 fair and the those photos you saw a moment ago depicted 2009's.
这里有90个来自哈佛开放学院的学生,他们正在通过远程教育来学习这门课程,所以参加2010年CS50课程的团体是很庞大的,刚才你们看到的图片显示的是,2009年的数据。
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