现代密码学 Modern Cryptography ; Modern Cryptology
替代密码 Substitution Cipher ; Monoalphabetic Substitution
多表替代密码 polyalphabetic substitution cipher
多字母替代密码 polygram substitution cipher
简单替代密码 simple substitution cipher
同音替代密码 Homophonic Substitution Cipher
多名码替代密码 homophonic substitution cipher
代换密码 Homophonic substitution cipher
代码密度 Code Density
代号、密码 Code
通过采用真实生活中的事例演绎类似亚里士多德、康德和约翰密尔等人的哲学理论，桑代尔成功的令这门课程引人入胜。
What makes the class so compelling is the way Sandel uses real-life examples to illustrate the philosophies of the likes of Aristotle, Immanuel Kant and John Stuart Mill.
史密森学会档案馆馆长埃菲·卡普萨利斯说：“我们在20世纪70年代中期的时候发现它不见了。”
"We realized in the mid-1970s that it was missing," says Effie Kapsalis, head of the Smithsonian Institution Archives.
20世纪80年代初期，金属乐队的詹姆斯·海特菲尔德和柯克·汉密特正在演出。
James Hetfield and Kirk Hammett of Metallica performing in the early 1980s.
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