the secret servicea) PGa British government organization that protects the country’s military and political secrets, and obtains secrets about other countries 〔英国的〕特工部门，特务机关
b) PGSCPa US government department that deals with special kinds of police work, especially protecting the president 特工处〔美国政府部门 主要负责保护总统〕
→ the secret service at secret service(1)