在对密码的统计攻击中，可用已知语言的各双字母组的频度来攻破密码。
In statistical attacks on ciphers the known frequency of various bigrams, in a given language, can be used in attempts to break the cipher.
在对密码的统计攻击中，可用已知语言的各双字母组的频度来攻破密码。
In statistical attacks on ciphers the known frequency of various bigrams, in a given language, can be used in attempts to break the cipher.
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