profitless，resultless，[法] bootless，unavailing，ineffectual ；

[例句] 鉴于这些事实, 继续下去似乎是无益的. In view of the facts, It'seems useless to continue.

[例句] 他们正在做无益的事. They are beating the air.

ephemeral，transient，[经] short-lived，brief，fugacious ；

[例句] 短暂的休息后，乐队继续演奏他们的曲目。 The band continued with their set after a short break.

[例句] 在他短暂的一生里，他只出版过3卷薄薄的诗集。 He published only three slim volumes of verse in his short life.

distinctive，individual，[法] su generis，inimitable，blue-chip ；

[例句] 每个房间都以淡雅或鲜艳的颜色和印花图案装饰成独特的风格。 Each room is distinctively decorated with light, bright colors and floral prints.

[例句] 其独特的电热元件使它能够煮出非常美味的咖啡。 With its unique heating element it makes perfect coffee.

circular，circulatory，[计] circulated，cyclic，periodic ；

[例句] 我们必须避免出现20世纪80年代那样具有破坏性的繁荣萧条交替循环的局面。 We must avoid the damaging boom-bust cycles which characterised the 1980s.

[例句] 这是完善循环的最低限度人数. That is the minimum number necessary to complete the circuit.

cloudless，fair，fine，serene，sunshiny ；

[例句] 西部可能会有一段天气晴朗的日子。 There is a chance of sunny spells in the West.

[例句] 那个凉爽而晴朗的早晨让他异常兴奋。 He felt strangely exhilarated by the brisk, blue morning.

high-pressured，high-handed，[医] hyperbaric，hyperpietic，heavy-fisted ；

[例句] 西莉亚也是那贪婪 、 无情 、 发横财 、 施加高压的药品工业的一分子. Celia is a part of that greedy, ruthless, moneycoining, high - pressure drug business.

[例句] 为了防止这种高压的发生,试件必须妥善接地. The specimen must be adequately grounded to prevent the development of there high voltages.

forced，impellent，nonnatural，coercionary，coercive ；

[例句] 她本以为会遇到粗暴强迫的举动, 现在觉得事情并非如此,倒松了口气. Expecting outrage and imposition, she was relieved to find she felt nothing.

[例句] 他给那男孩强迫的一推. He gave the boy a compulsive push.

complex，component，[计] resulting，compositive，ersatz ；

[例句] 地球是水与陆地合成的球体. The earth is a terraqueous globe.

[例句] 蜂胶是蜜蜂用植物汁液合成的像树脂一样的物质。 Propolis is a hard resinous sub-stance made by bees from the juices of plants.

barratrous，con，dishonest，deceitful，deceptive ；

[例句] 审计人员说他们已经发现了欺诈的证据。 Auditors said they had uncovered evidence of fraud.

[例句] 这种欺诈的勾当跟我格格不入. Underhand work of that sort is against the grain with me.

congenital，connate，genetous，connatural，inborn ；

[例句] 她身上有一种先天的娴静气质. There was such a world of hereditary quiet in her.

[例句] 爱普生大幅面绘图仪在使用成本上有这先天的优势. Epson large format plotters in - use cost for these natural advantages.

different，diverse，distrinct，another；

[例句] 他们把她与不同的男人扯上关系，包括大亨唐纳德·特朗普。 They've linked her with various men, including magnate Donald Trump.

[例句] 针对他们各人不同的需要挑选柔软、软硬适中或者坚硬的床垫。 Choose a soft, medium or firm mattress to suit their individual needs.

direct，immediate，[计] directly，straight-forward，firsthand ；

[例句] 部长否认两者之间有直接的联系。 The minister denied there was a direct connection between the two issues.

[例句] 他的影响是深远的，但不是直接的。 His influence has been profound, but it has been indirect.

free，unconstrained，[医] liber，uncontrolled，disengaged ；

[例句] 这音乐带给他一种完满和自由的感觉。 The music brought him a feeling of plenitude and freedom.

[例句] 他们把它视为对他们行动自由的侵犯。 They see it as an infringement on their own freedom of action.

slack，floppy，dowdy，slipslop，easygoing ；

[例句] 有工作要做的时候,他那懒散的态度总叫我着恼. His languid manner annoys me when there's work to be done.

[例句] 热带闷热的气候使得游客只能过懒散的生活. The sultry weather in the tropics encourages tourists to lead an indolent life.

less important，minor，[经] subordinate，secondary，lesser ；

[例句] 见解独到的人士要么被调往次要的岗位，要么就不被提升。 Independent thinkers are shunted into minor jobs or refused promotion.

[例句] 那只不过是次要的因素。 That is just a secondary consideration .

blooded，purebred，true to type，truebred，blue-blooded ；

[例句] 夏威夷最肥美的芒果, 最鲜艳的木槿和最纯种的骏马都在海那卡伊. Hawaii's best mangoes grew at Hanakai, its most brilliant hibiscus and its best horses.

[例句] 雷克斯是纯种的藏獒, 我们查过它的十代族谱. Rex is genuine Tibetan Mastiff. We traced his genealogy back 10 generations.

baleful，currish，catawampus，spiteful，venomous ；

[例句] 关于这件事正有一则恶意的谣言在流传。 There's a nasty sort of rumour going around about it.

[例句] 这仅是无恶意的愚蠢行为。 It was just a piece of harmless frivolity.

immanent，indwelling，[医] intrinsic，inherent，ingenerate ；

[例句] 不过，缺乏的是一种内在的艺术凝聚力。 What is missing, however, is an internal, artistic cohesion.

[例句] 性格是内在的. The character is intrinsic.

illicit，inhibitory，[计] disabling，inhibited，inhibitive ；

[例句] 这是法律禁止的. It is interdicted by law.

[例句] 世俗音乐是绝对禁止的. Secular music was flatly prohibited.

lawful，legal，legitimate，rightful，legit ；

[例句] 既然出售香烟是合法的，那么禁止做香烟广告就是违宪的。 Banning cigarette advertising would be unconstitutional, since selling cigarettes is legal.

[例句] 别担心，交易是完全合法的。 Don't worry; the deal was completely above board.