美国的亚洲

Unstable Angina不稳定心绞痛 United States of America美利坚合众国 United Software Association曼联的软件协会 Underground Service Alert地下服务警报 Under Secretary of the Army在陆军大臣 United States Attorney美国的律师 Under Skirt Area在裙子 Unix System AdminUnix系统管理员 University of South Australia南澳大学 United Stockgrowers of America曼联Stockgrowers美洲 United States Army美国军队 Universal Secure Access (Universal Secure Access Card Identifier)通用安全访问(通用安全准入卡标识符) Union of South Africa南非联邦 United Space Alliance曼联的空间的联盟 Unusually Sensitive Area (environmental)异常敏感的区域(环境)