非常感谢您的耐心阅读，请在下方提供您对本篇帮助的反馈，以便我们持续改进本文。 In 1951, the British Board of Film Censors introduced the X certificate to point a film was "exceptionally graphic." Even though this at first referred to violence and negative language and sex, "X-rated" was co-opted via the porn industry and it is now shorthand for sexually express materials. https://coingenius.news/generative-data-intelligence-and-quantum-innovations-key-developments-and-challenges-in-national-security-chemical-engineering-and-finance/