21. act on 奉行,按照…行動; act as 扮演; act for 代理
22. adapt oneself to(=adjust oneself to) 使自己適應(yīng)于
23. adapt…(for) (=make sth. suitable for a new need) 改編, 改寫(以適應(yīng)新的需要)
24. in addition (=besides) 此外, 又, 加之
25. in addition to(=as well as, besides, other than)除…外

26. adhere to (=abide by, conform to, comply with, cling to, insist on, persist in, observe, opinion, belief ) 粘附; 堅持, 遵循
27. adjacent(=next to, close to) 毗鄰的, 臨近的
28. adjust..(to) (=change slightly)調(diào)節(jié); 適應(yīng);
29. admit of (=be capable of, leave room for) …的可能，留有…的余地.
30. in advance (before in time) 預(yù)告, 事先.