个人身份证号码(PIN)是一个秘密数字密码。
Security PIN - personal identification number (PIN) is a secret numeric password.
准确的数字属于国家秘密。
但是我们不知具体数字,因为这个过程是秘密进行的。
But we don't know for sure because this process is so clouded in secrecy.
但是我们不知具体数字,因为这个过程是秘密进行的。
But we don't know for sure because this process is so clouded in secrecy.
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