Through a mathematical algorithm, a private key is like your electronic identification card; the public key is like the lock or gate mechanism that you present your ID card to.
通过一个数学算法，一个私钥如同您的电子身份证；公钥如同您向其出示身份证的锁或门机制。
For each lab session, you MUST obtain a MTL Identification card from a ta. ID CARDS are required for entering the lab.
每次实验课，必须从助教那里拿到一张MTL身份识别卡，当进入实验室的时候都需要这张身份识别卡。
A: Have you got any identification? B: Yes, here's my id card.
您有身份证明吗？ B：有，这是我的身份证。
Student ID card is the important identification of international students; it is required to be always taken along and is not allowed to be transferred or borrowed.
学生证是留学生重要的身份证明，需要随身携带，不能转借。
The paper presents a novel id card identification system using 2d barcode technology.
介绍了利用二维条码技术实现一种新型的身份证防伪认证系统。
The paper presents a novel id card identification system using 2d barcode technology.
介绍了利用二维条码技术实现一种新型的身份证防伪认证系统。
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