deadj.辅助的,助理的assistvt.援助,帮助helpassistancen.协助,援助assistantshipn.研究生助教奖学金associatev.关联,联合pertainto,connectton.radeadj.准的/副的(比正职低一级)associationn.关联,联合alliance,connectionn.协会club,unionassortedadj.各式各样的,多样混合的varied,miscellaneousassortmentn.各类物品的聚集,混合物variety,conglomerateassumevt.假定,设想suppose,presumevt.承担(责任);采用(形式或姿势)takeon,bearassumptionn.假设;就职hypothesis,supposition;installmentassurevt.确保;向…保证,使确信solidify;guarantee,convinceassuredlyadv.确实地,确信地certainly,undoubtedlyreassurevt.使...安心,打消...疑虑astonishvt.使惊讶surprise,shockastonishedadj.惊讶的astonishingadj.惊人的,奇迹的astounding,miraculousastoundvt.使惊异surprise,shockastoundingadj.令人吃惊的astronomicaladj.天文学的celestialastronomyn.天文学astronomern.天文学家astuteadj.机敏的,精明的shrewd,judiciousasymmetricaladj.不均匀的,不对称的unbalanced,unevenatintervals词组不时;相隔一段距离atonesession词组一下子,一次性
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