December 7 is known as "national students' day" in Iran, and it marks the anniversary of the 1953 slaying of three students by Shah Mohammed Reza Pahlevi's security forces, following a coup against populist Prime Minister Mohammed Mosadegh, earlier that year Eyewitnesses say hundreds of students have received threatening emails,this week, warning them not to participate in Monday's demonstrations.

VOA: standard.2009.12.07

You are not going to be sending emails during and exam.

考试的时候不能发邮件。

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Well, not everybody, but everybody can use to keep emails safe, just like sort of a really easy thing to do.

嗯，不一定是所有人，但是每个人都可以轻而易举地用这种密码来保证自己邮箱的安全，

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