Numbers are hard. That's why we teach whole semesters worth of courses in number theory.

因此我们整个学期关于数学理论,的学习也是物有所值。

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But I know today in my math class, we were learning about the guys who created RSA Public Key Cryptography.

但是今天的数学课上，我们在学习RSA公钥加密算法的创始人。

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