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| A: Stop! You are not authorized to enter this section of the building. B: Oh, I’m sorry, I didn’t realize that I needed special permission.
 authorize vt. 授权,批准
 A: What are you reading?
 B: Nelson Mandela’s autobiography, I highly recommend it.
 autobiography n. 自传
 A: Is that dog over there real?
 B: No, I think that it is just an automation.
 automation n. 自动化(技术),自动操作
 A: I am moving to an autonomous region of the country.
 B: Gosh, that will be an interesting experience.
 autonomous a. 1. 自治的;2. 独立自主的
 A: You are very independent.
 B: My autonomy is protected by the law.
 autonomy n. 1. 自治,自治权;2. 人身自由,自主权
 A: Where you able to get through to the ticket office when you telephoned?
 B: I tried several times, but to no avail.
 avail n. [一般用于否定句或疑问句中] 效用,利益,帮助
 A: What was the film about?
 B: A guy trying to avenge the killing of his brother. It was quite violent.
 avenge vt. 1. 为…复仇,报…之仇;2. (on)向…报仇
 A: Let’s turn left down the next road.
 B: Good idea, that way we can avert the traffic jam.
 avert vt. 1. 防止,避免;2. 转移(目光、注意力等)
 A: I heard that the national aviation company owes a lot of money to the government.
 B: Well, it must be because of the price of new planes.
 aviation n. 1. 航空,航空学;2. 飞机制造业
 A: I was filled with awe when I watched the sun rise this morning.
 B: It is a shame that I missed it, I was still in bed.
 awe n. 敬畏,惊惧
 vt. 使敬畏,使惊惧
 be / stand in awe of 敬畏
 A: At what speed does the earth spin on its axis?
 B: I am not quite sure, you should check in your textbook.
 axis n. 1. 轴,轴线,中心线;2. 坐标轴,基准线
 A: My brother got married last year.
 B: That surprises me, I thought that he would remain a bachelor for the rest of his life.
 bachelor n. 1. 单身男士,单身汉;2. 学士,学士学位
 A: That is a nice badge that you are wearing.
 B: Thanks, I bought it at the market this morning.
 badge n. 1. 徽章,证章;2. 标记,标志;3. 象征
 A: Would you like have a game of badminton with me this evening?
 B: Sorry, but I only play football.
 badminton n. 羽毛球运动
 A: Did you enjoy the film?
 B: Yeah, but I was baffled by the plot.
 baffle vt. 使困惑,难住
 A: Was the criminal released from jail?
 B: Yes, but only on bail.
 bail n. 1. 保释金;2. 准许保释
 vt. 1. (out) 保释,帮助脱离困境;2. 用桶(从船里)舀水
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