assess v. 評估(財產(chǎn), 價值, 人物、工作等)； (assess – evaluate – value評估)

assist v. (在某方面)幫助，援助，協(xié)助 ((assist sb. in doing sth/to do sth/在…方面幫助某人))

assistant n. 助手, 助理(assistant engineer/助理工程師; assistant professor/副教授);

associate v. 結(jié)交, 由...聯(lián)想到..., 把...聯(lián)系起來(associate one thing with another/把某一事與另一事聯(lián)系起來; ...be associated with sth./...和...有關(guān)/...和...有聯(lián)系):

association n. 聯(lián)合,協(xié)會, 社團(tuán):

assume v. 假設(shè)(assume – suppose ),承擔(dān)(assume – take on - acccept), 呈(態(tài)度, 姿態(tài), 位置) (assume new duties/承擔(dān)新的職務(wù); assume office/就職; assume responsibility/負(fù)責(zé), 承擔(dān)責(zé)任);

assure v. 保證 (assume - ensure) ，使安心，讓…放心 (assure sb. of/that…/向某人保證…)

astonish v. 使吃驚(astonish – surprise –shock)(be astonished at sth. /對…感到驚訝);

astronaut n. 宇航員

at prep.[位置， 場所， 地點，時間]在…時，在…中，在…方面，向，（表示速度，價格等）以(arrive at…/到達(dá)…; at my uncle's/在我叔父家;at the foot[top] of the mountain /在山腳下[頂上]; at the meeting/在會議上; at ten o'clock/在十點鐘; at (the age of) forty/在 40 歲的時候; at the beginning of the month/在月初; at Christmas/在圣誕節(jié); aim at…/對準(zhǔn)..; throw …at …/朝…扔…;be pleased at…/對…感到高興;be surprised [frightened] at …/聽到…而吃驚; at one's request/應(yīng)某人的請求; at the rate/speed of …/以每小時..速度);

athlete: n. 運動員

Atlantic adj.大西洋的；大西洋沿岸的(the Atlantic Ocean /大西洋);

atmosphere n. 大氣, 空氣, 氣氛;

attack n./v. 進(jìn)攻, 疾�。┣忠u，發(fā)作(a heart attack /心臟病發(fā)作);

attach v. 貼上，系上，縛上(attach… to … 把…貼/系在…上面)

attempt n. （常與at, on, to連用）努力, 嘗試v. （常與to連用）企圖, 嘗試 (attempt to do sth./make an attempt to do sth. /試圖做…);

attend v. 注意, 出席(at), 參加, 上(學(xué), 教堂) ( attend school /上學(xué); attend a lecture /聽講課; attend (at) a wedding /出席婚禮; be attended by/由...陪同; 由...照料);