1 at a disadvantage处于不利地位
2at a loss不知所措
3at a time每次,一次
4at all 丝毫,根本;
5 at any moment即使,随时。
6 as well也,一样
7 as yet迄今,到目前为止
8 aside from 除┄之外;
9 associate … with…由……联想到……,把……联系起来
10 association with与……的交往
11 at first 首先,开始的时候;
12 at large未被捕获的,大多数;
13 at last 终于,最终;
14 at least至少
15 at length 最终,详细地;
16 at most最多
17 at no time从不,决不
18 at one time曾经,从前曾
19 at the cost of以……为代价
20 at the least 至少;
21 at times有时,间或;
22 at…speed以……的速度
23 attend on 照顾,侍候;
24 attribute … to 把……归于
25 back up 后退,支持;
26 base on 基于
27 be able to能够,胜任
28 be about to正打算
29 be accustomed to习惯于
30 be associated with 与……有关,与……有关系
31 be aware of 意识到;
32 be capable of 有能力干;
33 be caught 遇到,陷入
34 be committed to被交给┄,答应承担┄义务;
35 be confined to 限制在,局限于;
36 be confined/be restricted受……限制
37 be dedicated to 奉献,献给;
38 be devoted to 被用于,贡献给
39 be directed to指向,针对
40 be drawn to 被┄所吸引;