accountant[E5kauntEnt] n. [C]会计师，会计：He signed the accountant to enter. 他示意叫会计进去。

accumulate[E5kju:mjuleit] v.积累，收集，积储：Dust soon accumulates in the room. 房间里很快积满了灰尘。/ He accumulated a good library. 他积累了丰富的藏书。

accuracy[5AkjErEsi] n. [U]准确，精确：firing accuracy 命中率 / with accuracy 准确地 / There is no need to check the accuracy of the report. 没有必要核实这份报告的准确性。

accurate[5AkjErEt] adj.准确的，正确无误的：Is that clock accurate? 那钟准吗? / He is accurate in his judgment. 他的判断正确无误。

accuse[E5kju:z] vt.指责，控告，指控：He accused her of cheating. 他指责她作弊。/ He was accused as an accomplice. 他被指控为同犯。

【注意】表示因某事而控告、指控、指责某人，通常用 accused sb of (doing) sth，其中的介词of 不能改为 for：The police accused him of theft [stealing]. 警方控告他偷盗。

accustomed[E5kQstEmd] adj. 习惯的，经常的：He is accustomed to hard work. 他习惯于苦干。/ She was accustomed to getting up early. 她习惯于早起。

【说明】表示习惯于做某事，通常用 be accustomed to，其中的 to 通常被认为是介词，后接名词或动名词，但在现代英语中，其后也可接动词原形(即 to 被视为不定式符号)。

ache[eik] n.[C,U]疼痛：I have an ache in the stomach. 我胃痛。vi. 痛：His back aches. 他背痛。/ I’m aching all over. 我全身都痛。/ Her head ached all night. 她的头整夜都疼。

【辨析】ache与pain：前者主要指肉体局部持续的疼痛或隐痛；而pain的应用范围则较广，可指轻微的痛或剧烈的痛，可指局部的痛或全身的痛，可指持续的痛或突发的痛等。

achieve[E5tFi:v] vt. 1.达到，取得：He achieved good results. 他取得了好成绩。/ She achieved no success. 她没有获得成功。2.完成，实现：I’ve achieved only half of what I hoped to do. 我仅完成了我所希望完成的一半。

【说明】通常用作及物动词，偶尔用作不及物动词，表示“获得成功”或“如愿以偿”： He achieved because he worked hard. 他因为工作努力获得了成功。

achievement[E5tFi:vmEnt] n.1.[U]完成：Such a goal was impossible of achievement. 那样的目标不可能实现。2.[C]成就，功绩：Landing on the moon was a remarkable achievement. 登上月球是一大伟绩。

acid[5Asid] n.[C,U]酸 adj.1.酸的，有酸味的：Lemons have an acid taste. 柠檬有酸味。2.尖刻的：acid remarks 刻薄话

acknowledge [Ek5nRlidV] vt.1.承认：acknowledge one’s fault 认错，赔不是 / I acknowledge the truth of his statement. 我承认他说的是事实。2.(公)认为：He was acknowledged to be [as] the best player. 他被公认为是最佳选手。

acquaintance[E5kweintEns] n.1.[C]相识的人，熟人：He is not a friend, only an acquaintance. 他不是朋友，只是相熟。/ He has many acquaintances. 他交友很广。2.[U](可连用a)熟悉，熟知：I have some acquaintance with the Russian. 我懂一点儿俄语。

acquire[E5kaiE] vt.1.获得，取得：She acquired a knowledge of the English by careful study. 她认真学习而精通英语。2.拥有，得到：Our company has recently acquired a new office building in Chicago. 我们公司最近在芝加哥得到了一栋新办公楼。

acquisition[7Akwi5ziFEn] n.1.[U]获得：He devotes his time to the acquisition of knowledge. 他把时间花在获取知识上。2.[C]得到的东西，得到的人：This motor-scooter is my latest acquisition. 这辆摩托车是我最新购置的。

acre[5eikE] n.[C]英亩：a farm of 20 acres 占地20英亩的农场 / The total area of a soccer field is about two acres. 一个足球场的总面积大约为两英亩。

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