可引用的發言段落Citable transcript turn
#59359
講者：Speaker:
If you just use Facebook and Twitter, these are applications that mostly work on top of the World Wide Web.
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可引用的發言段落Citable transcript turn
講者：Speaker:
If you just use Facebook and Twitter, these are applications that mostly work on top of the World Wide Web.
j 下一段next turnk 上一段previous turn