名词
中文翻译：密码本
同义词：
['cipher', 'codebook', 'cryptogram']
例句：
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1.The cryptic message was a puzzle for the experts to decipher.
这个加密的信息是专家们破解的谜题。
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2. The cryptographer used a complex algorithm to crack the encryption.
密码学家使用复杂的算法来破解加密。
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3.The government has been using cryptography to secure their communications.
政府一直在使用密码学来保护他们的通信。