concessional，faculative，[计] permitted ；

[例句] 容许的进口量将按照出口的多少而定. Imports will be allowed in proportion to exports.

[例句] 我含糊地告诉伊斯梅尔说,我们的行动是我国舆论所能容许的最低限度的行动. I told Ismail ambiguously that our actions were the minimum that public opinion would tolerate.

[医] antecedent ；

[例句] 当此时, 速度往往意味着先行的优势. When right now, speed often means the position of go ahead ofrest.

[例句] 二十年来, 东莞确立了基础设施先行的发展战略. The last two decades, Dongguan first established infrastructure development strategy.

adverse，contrary ；

[例句] 先生, 我不想再听任何反逆的言论! Sir, I refuse to listen to any renegade talk!

[例句] 空着双手将一切袒露, 如同这相逆的空间. Exposed with hands as empty, as the opposite space.

aerial，airy，pneumatic，atmospherical ；

[例句] 新鲜空气的康复功效 the restorative power of fresh air

[例句] 飞机须克服空气的阻力. An aircraft has to overcome the resistance of the air.

aeriform，gaseous，[机] gassous，gassiness，gassy ；

[例句] 该行业一直在努力开发一些可以替代这些气体的无害物质。 Industry has been working at developing harmless substitutes for these gases.

[例句] 一种气体的密度 the density of a gas

agonistic ；

[例句] 我们还获得了一次参加有奖智力竞赛的机会，奖品是成箱的啤酒！ We've also got a bonus quiz with crates of beer as prizes!

[例句] 将发信通知竞赛的优胜者。 Competition winners will be notified by post.

airborne，skyborne，[经] air borne ；

[例句] 我们有能力扩大空运的规模,同苏联的任何升级行动相匹敌. We had the capacity to expand the scale of the airlift to match any Soviet escalation.

[例句] 不, 空运的运费太贵了. 它们可以用船运. No, air freight's too expensive. They can go by sea.

algebraic ；

[例句] 他对方法的普遍兴趣和他对代数的专门知识组成联合力量. Here his general interest in method and his particular knowledge of algebra joined forces.

[例句] 用代数的方法来表现这个过程,就更容易说明平均数是如何求得的. It is much easier to indicate how to find the mean by expressing the procedure algebraically.

advanced，antecedent，[医] praevia，anterior，leading ；

[例句] 在后的,将要在前; 在前的,将要在后. So the last will be first, and the first will be last.

[例句] 然而,有许多在前的,将要在后;在后的,将要在前. But many who are first will be last and many who are last will be first.

foregoing，foregone，[计] firs，prior ；

[例句] 允许考虑先前的法律。 It was permissible to take account of antecedent legislation.

[例句] 我试图将先前的境遇从大脑中抹去。 I was trying to blank out previous situations from my mind.

aseptic，sterile，[医] amicrobic，axenic，germfree ；

[例句] 尿液是无菌的。 Urine is sterile.

[例句] 手术室应该是个无菌的环境. An operating theatre should be a sterile environment.

appellant，appellate ；

[例句] 一般而论, 被允许上诉的案件都牵涉到法律问题, 而非事实问题. Generally, appeals are permitted only on questions of law, not of fact.

[例句] 顾名思义, 上诉法院有受理上诉的裁判权. As the name implies, the courts of appeals have appellate jurisdiction.

admissive，approbatory，[法] sanctionative，unforbidden ；

[例句] 约翰尼和盖伊是英国最了不起的、还未被公众认可的流行歌曲创作者。 Johnny and Guy are the greatest unacknowledged pop songwriters in Britain.

[例句] 大气污染程度超出了普遍认可的标准10倍或更多。 The air pollution exceeds most acceptable levels by 10 times or more.

aquatic，water，waterborne ；

[例句] 油有浮在水上的特性. Oil has the property of floating on water.

[例句] 然而,五大湖流域的州地在水上的特殊问题仍继续存在. Great Lakes states continue to have their own unique water problems, however.

[财]amount assessed ；

[例句] 7,000万英镑的金额是预期的两倍。 The figure of seventy-million pounds was twice as big as expected.

[例句] 邮政汇票的金额最高可达700美元。 Postal money orders are available in amounts up to $700.

self-confident，confident，self-assurance ；

[例句] 培养一种自信的积极心态会让人受益匪浅。 Cultivating a positive mental attitude towards yourself can reap tremendous benefits.

[例句] 她是一位充满自信的女性，对自己的观点深信不疑。 She is a confident woman who is certain of her views.

authoritative，canonical ；

[例句] 她对权威的仇恨导致她被中学开除。 Her hatred of authority led to her expulsion from high school.

[例句] 她给人一种很有权威的感觉。 She had an aura of authority.

independent，[医] autonomic，autonomous ；

[例句] 在非自主的系统中, f是t的显函数. In a nonautonomous system, f is explicitly a function of t.

[例句] 这当然不是林业学的一种自主的发展. This of course was not an autonomous development of forest science.

average，even，mean，medial ；

[例句] 一种平均的节奏在我们耳边颤动着. A regular rhythm pulsated in our ears.

[例句] 加速度计的偏置误差形成一平均的常值偏离加上一振荡分量. The accelerometer bias errors result in an average constant offset plus an oscillatory component.

[数]recurrent ；

[例句] 要将少校即将返回的消息告知朱利安·卡文迪什是有绝对充足的理由的。 There were perfectly cogent reasons why Julian Cavendish should be told of the Major's impending return.

[例句] 当局已经下令让所有从前线返回的士兵回营地报到。 The authorities have ordered all soldiers who have returned from the front line to report back to barracks.