the Official Secrets Act
noun [ S ] uk/əˌfɪʃ.əl ˈsiː.krəts ˌækt/ us/əˌfɪʃ.əl ˈsiː.krəts ˌækt/
（英国）《国家机密法案》
a law in the UK that prevents government workers from giving out particular information that could be used against the government
She had to sign the Official Secrets Act when she started her new job. 她开始从事新工作时必须签字遵守《国家机密法案》的规定。