SS /ˌɛsˈɛs/
  起泡皂水
  SS
       n 1: the United States intelligence agency that protects current
            and former presidents and vice presidents and their
            immediate families and protects distinguished foreign
            visitors; detects and apprehends counterfeiters;
            suppresses forgery of government securities and
            documents [syn: United States Secret Service, US
            Secret Service, USSS, Secret Service]
       2: special police force in Nazi Germany founded as a personal
          bodyguard for Adolf Hitler in 1925; the SS administered
          the concentration camps [syn: Schutzstaffel]