详细解释:【计】 子系统, 卫星系统, 源语句, 同步分类, 系统管理程序
【医】 半
英语解释：
名词 ss:
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同义词：United States Secret Service, US Secret Service, USSS, Secret Service