Arao荒生ARAn.[天]天坛星座abbr.机载雷达附件（=Airborne Radar Attachment）araneidaladj.真蜘蛛类的arachnids蛛形类,蛛形纲arachanol皮囊瘤甾醇arapahite磁玄岩Aratiatian.阿拉蒂亚蒂亚(在新西兰；东经 176º10' 南纬 38º36')Arapovics奥劳波维奇Aranguiti阿朗吉蒂Araschnia蜘蛱蝶属Aradillas阿拉迪利亚斯arachnoidadj.蛛网状的；蛛网膜的n.蛛网膜