The rule of recognition is the ultimate rule in a legal system, which identifies the criteria for valid law.
法律与道德的分离是法律体系的一个必要特征。
密码学中的挑战不仅仅是创建不可破解的代码,还包括创建即使技术发展也能保持安全的系统。
"The novel is a very forgiving form. It can accommodate almost anything."
The conductor's baton is a magic wand that can transform noise into beauty.