"One of the jobs of the president, whether you are named Bush or Obama, is to go out there and reassure people and to show you are in charge and to send a signal to potential enemies out there that this will not be tolerated by any American leader, and they did not project that power effectively,".

VOA: standard.2010.01.06

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

You send off a ship to Newfoundland, or to Iceland, or even to the Mediterranean.

开始派舰船去纽芬兰,或是冰岛,甚至是地中海

耶鲁公开课 - 欧洲文明课程节选

If you have any questions, come up and see me or send me an e-mail.

有任何问题 来见我,或给我发邮件

耶鲁公开课 - 聆听音乐课程节选