ace

　　n. 1.(纸牌等中的)幺点，“A”牌

　　2.(网球等比赛中)发球得分

　　3.(在某方面的)佼佼者

　　a. 第一流的，杰出的

　　A: Do you play the acoustic guitar?

　　B: Usually I play the electric.

　　acoustic

　　a. 1.听觉的，声音的

　　2.(乐器)原声的

　　A: Have you acquainted yourself with the material yet?

　　B: No, I still have to read the book.

　　acquaint

　　vt. (with)使认识，使了解，使熟悉

　　A: Has the case come to a close?

　　B: Yes, the suspect was acquitted because there was not enough evidence.

　　acquit

　　vt. 1.宣判……无罪

　　2.(oneself)使(自己)作出某种表现

　　A: If you press that red button you will activate the bomb.

　　B:I’ll be sure not to press it then.

　　activate

　　vt. 使活动起来，使开始起作用

　　A: What do you want to be when you grow up?

　　B: A feminist activist , working for female rights

　　activist

　　n.(政治活动的)积极分子，活动家

　　A: Do you drink tea?

　　B: Yes, but I am addicted to coffee.

　　addict

　　n. 1.有瘾的人;2.入迷的人

　　vt. 使成瘾，使入迷

　　A: I watch too much television.

　　B: Me too, it is addictive

　　addictive

　　a. 使人入迷的，使人上瘾的

　　A: Are you going to wear those old shoes to the wedding?

　　B: Yeah, I hate adhering to formalities.

　　adhere

　　vi. (to )1.黏附，附着;2.遵守，坚持;3.追随，支持

　　A: Your poster has fallen down from the wall.

　　B: I ran out of adhesive and forgot buy some more.