United States Conference on AIDS美国的艾滋病大会 United States Cavalry Association美国骑兵协会 United States Contractors Association美国承包商协会 United States Code Annotated美国代码注解 University of South Carolina Aiken南卡罗莱纳大学演 United States Croquet Association美国槌球协会 University Students' Cooperative Association大学生合作协会 United States Canoe Association美国独木舟协会 United States Court of Appeals美国上诉法院 United States Curling Association美国冰壶运动协会 United States Champion Association美国冠军协会 United Sidecar Association (motorcyclists)美国摩托车协会(机车) Union Sindical de Controladores Aereos (Spanish: Air Traffic Controllers Labor Union; Spain)工会Sindical德Controladores Aereos(西班牙语:空中交通管制员工会,西班牙) United States Carrom Association美国Carrom协会 US Canola Association我们油菜协会