a/anart.一，一个，（一类事物中的）任何一个abandonv.放弃，抛弃abatev.减轻,废除abbreviatev.缩写，简略abdomenn.腹部aberranta.异常的，畸变的abidev.遵守，坚持（by）abilityn.能力，智能，才能ablatev.切除ablea.有能力的abnormala.异常的aboardad.在船...上；prep.在（……）上abolishv.取消abolitionn.取消aborticidev.堕胎abortionn.流产aboundv.盛产aboutprep.大约aboveprep.在…上abradev.擦伤abreasta.并肩的abroadad.国外abrupta.突然的abscessn.脓肿absencen.缺席absenta.缺席的absolutea.绝对的absolutelyad.绝对地absorbv.吸收absorptionn.吸收abstainv.避免，戒，弃权abstemiousa.有节制的abstinencen.节制abstractn.摘要absurda.荒唐的abterminala.离末端的abundanta.丰富的abusev.滥用academica.学院的academyn.专科院校acalcerosisn.缺钙acceleratev.加速accentn.口音acceptv.接受acceptablea.可接受的acceptancen.接受accessn.进入accessiblea.可进入的accessoryn.附件accidentn.事件accidentala.偶然的acclaimv.欢呼accommodatev.容纳accommodationn.膳宿供应accompanyv.伴随accomplicen.共犯accomplishv.完成accordv.一致accordancen.一致accordingad.按照accordinglyad.因此accountn.账目accountablea.有责任的accountantn.会计accumulatev.积累accuracyn.精确度accuratea.精确的accusev.谴责accustomv.使习惯accustomeda.习惯的acellulara.无细胞的achen.疼痛achievev.完成achievementn.完成achlorhydrian.胃酸缺乏achroacytosisn.淋巴细胞增多achromatopsian.色盲acida.酸的acidosisn.酸中毒acknowledgev.承认acknowledgementn.承认acnen.痤疮acouophonen.助听器acoustica.声学的acquaintv.使认识acquirev.取得acquireda.获得的acquitv.宣告无罪acren.英亩acrossad.横越actn.行动actinn.肌动蛋白actionn.行动activatea.使活动activea.活动的activityn.活性actorn.男演员actressn.女演员actuala.实际的actuallyad.实际地acupuncturen.针刺acutea.尖锐的A.D.公元adn.广告adaptv.使适应adaptatinn.适应adaptivea.适应的addv.加上addictv.使沉溺addicteda.入迷的additionn.加法additionala.附加的additivea.附加的addressn.地址adducev.引证adenitisn.腺炎adenocarcinaoman.腺癌adepta.熟练的adequatea.足够的adherev.粘附adiposisn.肥胖症adjacenta.邻近的adjectivea.形容词adjunctn.附属品adjustv.调节adjustmentn.调节administerv.管理administrationn.管理administrativea.行政的admirablea.令人钦佩的admirationn.钦佩admirev.钦佩admissionn.接纳admitv.接纳admonishv.告诫adolescenta.青春期的adoptv.收养adoptionn.采用adorev.吸附adrenalitisn.肾上腺炎adrenomegalyn.肾上腺肿adrenopathyn.肾上腺病adsorbv.吸附adultn.成人advancev.促进advanceda.进步的advantagen.优点advantageousa.有利的adventn.出现adventuren.冒险adverbn.副词adversaryn.对手adversea.相反的advertisev.通知adver