The spokeswoman says if you get an e-mail you are not sure about, forward it or send a separate message to ContactETS@ets.org.

VOA: special.2010.02.18

If you have some plain text, some message that you want to send, well, you can encrypt it or you can scramble it using a key, a secret key, which might be a physical machine like the Enigma 13 or it might be a number like 13.

如果你有没有加密的文本，你想要寄送的一些消息,你就可以加密它,或者你可以用一个密钥使其变得混乱，那就像一个英格玛的物理装置,或者他就是一个数字。

哈佛公开课 - 计算机科学课程节选

When you buy a drug, you scratch the panel, you send a text message with the number that you see, and you get a response instantly at the counter if the drug is genuine or fake."

VOA: standard.2010.06.07