It occured to me yesterday in my class that maybe someday there won't be social security numbers anymore, and on birth everybody will be given an e-mail address.

我昨天上课的时候想到,或许有天大家出生时,得到的将不是社会福利号码,而是一个邮箱地址。

麻省理工公开课 - 电影哲学课程节选

It's a class called "Global Security After the Cold War",

我最喜欢的课是“冷战后的国际安全”，

想进布朗的话 - SpeakingMax英语口语达人