Noun:

1. the law enforcement and tax collection agency of the Treasury Department that enforces federal laws concerning alcohol and tobacco products and firearms and explosives and arson

atprep.在；向；达n.基普(老挝货币基本单位)(=att)；[化]砹(极不稳定放射性元素)abbr.密封的(=airtight)abbr.气温(=air temperature)ATOCabbr.（=Allied Tactical Operations Center） 联合战术运转中心；（=Acoustic Thermometry of Ocean climate）海洋气候声学温度测量系统Atei阿提Athan.阿萨ATISn.自动终端信息业务Aten阿托恩ATHR茶马古道ATWSn.扫描时自动跟踪Atze阿策ATRTn.发电机阻塞放电管attan.渺(微微微；毫尘)