计算机密码学基本知识 Computer Cryptography Basic Knowledge
如果你的演讲主题比较敏感或者你的信息涉及到机密，不管你掌握多少知识，在演讲中谈论到这些问题时都要小心谨慎。
No matter how much knowledge you have, if your subject is at all sensitive or your information is classified, be careful when discussing it during your impromptu speech.
知识产权包括专利、版权、商标和商业机密，在每一个国家里受到不同法律的制约。
IP rights include patents, Copyrights, trademarks, and trade secrets, each of which is subject to separate laws in every country.
烘焙高手混合咖啡豆的知识可谓是最高的行业机密。
The roaster's blending knowledge is usually a closely guarded secret.
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