I don't know what he thinks he is, or why he thinks he exists.
我不知道他把自己看成什么,他为什么认为自己还活着。
Don't expect your spouse to guess why you're upset or to know what will help you.
别期待您的配偶会猜透为什么您不开心或者知道怎样做能够帮助你。
I don't know what we are doing or why we are doing it.
我都不知道自己在干什么,为什么要这么干。
It's a secret number so that if Julius Caesar scrambled his message with the key 13, well, then the recipient had better know what that number is or realistically, -- and this is why it's kind of hard to buy -- into some of these age old algorithms, -- what would an alternative approach be to figuring out Julius Caesar's messages to his generals if he didn't know that secret number was 13?
它是一个机密的数字,以至于,如果凯撒大帝使用密钥13加密了它的消息,然后接收者最好知道那个数字是什么,实际上--这就是为什么很难,破解这些古老的算法-,有什么变换方法使凯撒大帝的将军,可以解密凯撒大帝的消息,如果他不知道,那个机密数字是13呢?
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