acceleration:  n.加速度，加速【同】speeding up, hastening, increase of speed, quickening, hurrying, expedition, stepping up, picking up speed

(来源：英语麦当劳－英语学习门户 EnglishCN.com)

    accessory: n. ① 附件, 零件, 附加物 ②从犯, 同谋者adj.附属的, 补充的, 同谋的, 副的【同】helper, aid, assistant, see associate (来源：英语麦当劳－英语杂志 EnglishCN.com)

    accumulate: v.积聚, 堆积【同】hoard, get together, gather (into a mass), collect (a bulk of), heap, store, assemble, aggregate, concentrate, stack up or together, stockpile, store up, heap up or together, acquire, gain, load up, attach, draw or bring together, lump together, unite, incorporate, add to, profit, make money, grow rich, build up, gain control; increase, swell, build up, expand, grow, enlarge; multiply【反】scatter, squander, distribute (来源：英语麦当劳－英语快餐EnglishCN.com)

    adjoin: v.邻接, 毗连【同】be close to, lie beside, be adjacent to; unite, append, join

(来源：EnglishCN英语博客基地)

    advance: n. ①前进, 提升【同】impetus, progression, motion, progress ②预付款【同】allowance, credit, loan v. ①前进, 提前，提出【同】progress, proceed, move on, press on, stride forward, go forth, speed on, step forward, come to the front, move onward【反】halt, stop, stand still ②预付make payment, prepay, pay up【同】adj. 前面的, 预先的【同】radical, unconventional, ahead of the times

    adhere:[Ed5hiE] v. ①粘附, 胶着 ②坚持【同】follow, be devoted to, obey; conform to, observe, abide by, comply (with); cling to, hold fast onto, stick to

(来源：英语麦当劳－英语杂志 EnglishCN.com)

    adverse: [5AdvE:s ] adj.不利的, 敌对的, 相反的【同】hostile, conflicting, unfriendly; unfavorable, inopportune, disadvantageous (来源：英语麦当劳－英语快餐EnglishCN.com)

    affiliate:v. (使…)加入, 接受为会员【同】combine, associate, form connection with, associate, untie

(来源：英语麦当劳－英语杂志 EnglishCN.com)

    agitation:  n. ①激动, 兴奋② 煽动, 搅动【同】stir, confusion, tumult, excitement

    apprehension:  n. ①理解【同】comprehension, grasp, perspicacity, judgment ②忧惧【同】dread, fear③拘捕【同】capture, seizure, detention, arrest

    agony: n.苦恼, 极大的痛苦【同】suffering, torture, anguish, pain

(来源：英语分类信息 http://fl.englishcn.com)

    appraisal:  n.评价, 估价(尤指估价财产,以便征税), 鉴定【同】assess, price, value; calculate, evaluate, figure, estimate

(来源：EnglishCN英语问答中心[e问e答])

    alien:n.外侨 adj. ①外国的, 相异的②不同, 背道而驰【同】exotic, strange, unknown, foreign; different, dissimilar, outlandish, queer (来源：英语博客 http://space.englishcn.com)

    anonymous: adj.匿名的【同】unsigned, nameless, unknown, unacknowledged, unnamed, authorless, unclaimed, unidentified, bearing no name【反】named, signed, acknowledged (来源：最老牌的英语学习网站 EnglishCN.com)

    arbitrary: adj. ①任意的【同】willful, self-assertive, injudicious, inconsistent, irresponsible, opinionated, unreasonable, unscientific, superficial②武断的, 独裁的, 专断的【同】dictatorial, tyrannical, absolute, autocratic

(来源：英语聊天室 http://chat.EnglishCN.com)

    assimilate: v.吸收【同】v. take up, digest, absorb; grasp, learn, sense; see understand; adapt, acclimatize, accustom, conform (来源：英语麦当劳 http://www.EnglishCN.com)

    auxiliary: adj.辅助的, 补助的【同】aiding, assisting, supporting, collaborating, co-operating; secondary, subordinate (来源：英语学习门户网站EnglishCN.com)

    blunder: v. ①跌跌撞撞地走②犯大错, 做错 n.大错, 失误【同】mistake, lapse, oversight, error

    challenge: n.挑战【同】dare, provocation, threat vt.向……挑战【同】to invite to contest, threaten; dispute, inquire, doubt, question【反】abandon, give up, put away (来源：英语问答中心 http://ask.englishcn.com)

    coherent: adj. ①粘在一起的【同】consistent, identified, combined②一致的, 连贯的【同】comprehensible, sound, intelligible

(来源：英语麦当劳www.EnglishCN.com)

    comply:  vi. ①顺从, 答应②遵守【同】conform, agree to, obey (来源：最老牌的英语学习网站 EnglishCN.com)

    compromise: n.妥协, 折衷【同】bargaining, granting, concessions, finding a middle course, agreement v. ①妥协, 折衷【同】agree, conciliate, find a middle ground, take to arbitration, negotiate②危及……的安全【同】jeopardize, hazard, imperil (来源：英语学习门户网站EnglishCN.com)

    conspicuous: adj. 显著的【同】outstanding, eminent, distinguished, celebrated, notable, illustrious, prominent, remarkable, renowned, famed, notorious, glaring, noticeable (来源：英语e问e答 http://ask.englishcn.com)

    dilemma: n.进退两难的局面, 困难的选择【同】perplexity, predicament, situation, plight, difficulty (来源：英语学习门户网站EnglishCN.com)

    elaborate:v. ①精心制作 ②详细阐述, 详细描述 adj. ①精心制作的②详细阐述的【同】complicated, extensive, laborious, minute, widely developed, intricate, involved, highly organized, many-faceted, complex, painstaking, studied (来源：英语聊天室 http://chat.EnglishCN.com)

    exaggerate: v.夸大, 夸张【同】overestimate, overdraw, overstate, misrepresent, falsify, magnify, expand, amplify, pile up, heighten, intensify, distort, enlarge (on), make too much of, lie, fabricate, corrupt【反】underestimate, tell the truth, minimize

    feasible:  adj.可行的, 切实可行的【同】achievable, attainable, workable; probable, practicable hypocrisy: n. 伪善，口是心非 【同】affectation, bad faith, hollowness, display, lip service, sham, fraud, pretense of virtue or piety, false goodness, deception, dishonesty, lie