581,"attractive","[:/CT3EC0H]adj 有吸引力的【记】at一再，tract拉－一再拉你的注意力－吸引人的【类】ravishing:attractive＝perspicacious:discerning引人入胜的十分有吸引力＝敏锐的十分有洞察力"

582,"attribute","[:/CT0BU7:C]n 属性，性质；v 把…归于【例】David attributed his success to the unity of all the staff 大卫说他之所以获得成功是由于全体员工工作的结果。【根】tribute分配，拨给－把…归于【参】attribution（n 归因）；distribute（vt 分发）；tribute（n 贡品）【反】exculpate（v 使无罪）；attribute guilt（归罪）"

583,"attrition","[:/CT0M:Q]n 消磨，磨损（通过磨擦作用擦掉或消耗掉）；消耗【例】The long war of attrition exhausted the strength of both countries 这场长期的消耗战耗尽了两国的力量。【根】attrit磨擦－磨损。参：contrition（n 悔悟；后悔） "

584,"attune","[:/CU7:Q]vt （为乐器）调音；使协调【例】an industry that is not attuned to the demands of the market 与市场需求不协调的工业【记】at一再，tune音调－调音"

585,"atypical","[<0/C0A0E:S]adj 非典型的（不标准的，不正常的与类型不符的）【记】a无，非，typical典型的"

586,"auction","[/5:EM:Q]n 拍卖（将物品卖给最高出价者的公开出售）【例】auction sth  off  把某物拍卖掉【记】auct＝aug增加－增加价格－拍卖【参】augment（v 增加，增大）；august（n 八月）"

587,"audacious","[5:/D<0M:K]adj 大胆鲁莽的（常指不顾结果的大胆）＝daredevil【例】audacious behavior  无礼的行为【记】auda鲁莽，cious多…的－鲁莽的【类】audacious:trepidation＝shiftless:aspiration＝laconic:volubility大胆的不会颤抖＝无雄心的不会有热望＝说话简洁的不会口若悬河audacious:caution＝inedible:food卤莽的不是谨慎:不能食用的不是食物【反】circumspect（adj 慎重周到的）『meticulous极为慎重的』；timid（adj 胆小的）"

588,"audacity","[5:/D3K0C0]n 大胆，鲁莽＝temerity【例】He had the audacity to pick pockets in broad daylight 他竟敢在光天化日之下掏包。【类】daredevil:audacity＝malcontent:dissatisfaction冒失鬼特点是鲁莽＝不满者特点是不满"

589,"audible","[/5:D:BS]adj 听得见的＝aural＝auricular【根】audi听，ble能－能听的见的【类】audible:stentorian＝discernable:obvious[manifest]程度类比：听得见的:洪亮的＝可见的:明显的"

590,"audit","[/5:D0C]v 审计（对帐务的审查来核实其准确性）；旁听（不要求得到学分而参加某一科目学习）"