文档介绍：1 a host of  大量
2 a test for 检测目的
3 a test on 对……进行测试
4 a test with 检测手段
5 above all 最重要的;
6 according to 根据
7 achieve equilibrium 取得平衡
8 achieve one's purpose 达到目的
9 achieve ess 获得成功
10 achieve victory 获得胜利
11 act on 遵照┄行动,作用于;
12 act on 对……有影响
13 add up to 总计,合计
14 add… to 把……加到……
15 adhere to 坚持,奉行;
16 after all 毕竟,均不合题意;
17 agree on 对……取得一致意见
18 agree to 同意
19 agree with
20 along with 和……一道,和……一起;
21 alternate (with) 交替;
22 amount to 合计,共计;
23 an equal to 与……相当的人/物,(地位)相同的人
24 and yet 然而
25 anything but  一点也不;
26 anything like 像……那样的东西
27 anywhere near 接近于
28 apart form 除……之外尚有
29 apply to 向……申请,适用于
30 appreciation of 对……的欣赏/赞赏
 
31 argue against 反对
32 as a result of 作为……的结果,由于
33 as a result (作为结果,因此)表结果,用不用逗号隔开看情况而定;
34 as a whole 作为一个整体,整个看来
35 as far as …/are concerned 就……而言
36 as for 至于,就…方面说
37 as if 好像,仿佛
38 as soon as 一……就……
39 as though 好像,仿佛
40 as to 至于,关于;
41 as well 也,一样
42 as yet 迄今,到目前为止
43 aside from 除……之外;
44 associate … with…由……联想到……,把……联系起来
45 association with 与……的交往
46 at a disadvantage 处于不利地位
47 at a loss 不知所措
48 at a time 每次,一次
49 at all 丝毫, 根本;
       50 at any moment 即使,随时
    51 at first 首先,开始的时候;
52 at large未被捕获的,大多数;
53 at last 终于,最终;
54 at least至少
55 at length 最终,详细地;
56 at most最多
57 at no time从不,决不
58 at one time曾经,从前曾
59 at