TED演讲之生与死:在你最后的状态更新之后(1) By the end of this year, 截止今年年底， there'll be nearly a billion people on this planet 这个星球上将有接近十亿人口 that actively use social networking sites. 在很活跃地使用社交网站。 The one thing that all of them have in com 英语演讲 2020-09-09 hisen
