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
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