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 最关键；6 according to 根据7 achieve equilibrium 获得平衡8 achieve one’s purpose 达到目的9 achieve success 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……获得一致意见18 agree to 同意19 agree with sb.同意某人话20 along with 和……一道，和……一起；21 alternate (with)交替；22 amount to 合计，合计；23 an equal to 和……相称人/物，(地位)相似人24 and yet 然而25 anything but 一点也不；26 anything like 像……那样东西27 anywhere near 靠近于28 apart form 除……之外尚有29 apply to 向……申请，适用于30 appreciation of 对……欣赏/赞赏31 argue against 反对32 as a result of 作为……成果，由于33 as a result (作为成果，因此)表成果，用不用逗号隔开看状况而定；34 as a whole 作为一种整体，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 仿佛，仿佛38 as soon as 一……就……39 as though 仿佛，仿佛40 as to 至于，有关；41 as well 也，同样42 as yet 迄今，到目前为止43 aside from 除……之外；44 associate … with…由……联想到…，把…联络起来45 association with 和……交往46 at a disadvantage 处在不利地位47 at a loss 不知所措48 at a time 每次，一次49 at all 丝毫，主线；50 at any moment 虽然，随时。51 at first 首先，开始时候；52 at large 未被捕捉，大多数；53 at last 最终，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，此前曾59 at the cost of 以……为代价60 at the least 至少；61 at times 有时，间或；62 at…speed 以……速度63 attend on 照顾，侍候；64 attribute … to 把……归于65 back up 后退，支持；66 base on 基于67 be able to ...
