The secretary's visit marks the start of intensive U.S. -Mexico dialogue on the matter.

VOA: standard.2009.03.25

So one of the things that the Allies very specifically wanted to do in World War II was to hijack one of these devices, take it from a U-boat because if they had this physical machine, certainly can they start decrypting then the German messages.

所以同盟国在二战中想做的一件事,就是劫持其中一个装置，携带在U型潜水艇中，因为如果他们拥有了这种物理装置，他们就可以解码,德国人的密文。

哈佛公开课 - 计算机科学课程节选

The START-1 treaty was negotiated in the 1980s,signed by U.S.President George Herbert Walker Bush and Soviet President Mikhail Gorbachev in 1991,and came into force in 1994.

VOA: standard.2009.04.08