[数] inequality，non-equality，odds，inequation ；

[例句] 我们现在推导这个不等式的另一种有用形式. We derive now a useful variant of that inequality.

[例句] 因上述不等式不能成立,所以不能采用串行进位同步计数器. Since the above inequality is not satisfied a serial - carry synchronous counter can not be used.

unsafe，incertitude，insecurity ；

[例句] 许多校舍不安全，有些简直是摇摇欲坠。 Many school buildings are unsafe, and some are falling apart.

[例句] 由于存在着危险的下层逆流，在大部分海岸线附近游泳都不安全。 Dangerous undertows make swimming unsafe along most of the coastline.

immobile，immovable，stock-still，impassive，motionless ；

[例句] 交通堵塞中静止不动的汽车产生了大量污染。 Stationary cars in traffic jams cause a great deal of pollution.

[例句] 肥胖和久坐不动的生活方式被认为会增加患心脏病的几率。 Obesity and a sedentary lifestyle has been linked with an increased risk of heart disease.

unfortunate，unlucky，ill-fated，luckless，miserable ；

[例句] 不幸的是，几乎不可能看到这些重大问题得到回复。 Unfortunately, there is little prospect of seeing these big questions answered.

[例句] 由于发生了不幸的意外，我知道消息的时候已经晚了一天。 Through some unfortunate accident, the information reached me a day late.

dislike，have no use for ；

[例句] 他不喜欢在细节上被人抓住把柄。 He did not like to be caught out on details.

[例句] 他曾告诉一位采访者，他甚至都不喜欢摇滚乐。 He once told an interviewer that he didn't even like rock music.

ceaseless，constant，uninterrupted，continuous，incessant ；

[例句] 在全面质量管理原则下，对质量的追求是持续不断的。 Under TQM principles the search for quality is continuous.

[例句] 我们总是遭到排挤、剥削和不断的恐吓。 We've always been marginalized, exploited, and constantly threatened.

[法] disfavour，deprecate，disapprobation，disapproval，disapprove ；

[例句] 首相明确表示他不赞成。 The Prime Minister made it clear that he disapproved.

[例句] 我极不赞成你试图达成的目标。 I'm highly unsympathetic to what you are trying to achieve.

disloyalty，serve two masters，treason，[电影]Infidelity；

[例句] 婚姻不忠会提升领导人可信度的暗示荒谬之极。 The implication that marital infidelity enhances a leader's credibility is preposterous.

[例句] 对某些有不忠嫌疑的官员已经提起了诉讼。 Charges had already been made against certain officials suspected of disloyalty.

discordance，disharmony，dissonance，incongruity，inconsistency ；

[例句] 选择窗帘和地毯时,尽量避免颜色不调和. Try to avoid colours that jar when choosing curtains and rugs.

[例句] 这几种布的缺点是颜色不调和. The defect of these cloths is clash of colors.

unsoundness，uncertain，unreliable，fallibility，uncertainty ；

[例句] 他的判断不可靠。 His judgement was unreliable.

[例句] 你不能根据他的话判断, 他是很不可靠的. You can't go by what he says; he's very untrustworthy.

not adapted to，not fit to，not suited to，like a fish out of water，maladjustment ；

[例句] 学院的老师们抱怨说他们的学生还很不适应大学的课业。 Faculty members complain that their students are unprepared to do college-level work.

[例句] 他总觉得自己在商业界有些不适应. He always feel a bit of a misfit in the business world.

improper，inappropriate，out of place，unseemliness ；

[例句] 不合适的洗发水会使卷发纠结成乱糟糟的一团。 The wrong shampoo can leave curly hair in a tangled mess.

[例句] 亨利呆在她的公寓里怎么也不合适。 It would never do to have Henry there in her apartment.

bodeful，inauspicious，not in detail，ominous，ugly ；

[例句] 据当地民间传说，那是个不祥的地方。 According to local folklore it is an evil place.

[例句] 酒吧里非常安静，给人一种不祥的预感。 The bar seemed ominously quiet.

[数] undeterminedness，indefiniteness，[力； 数] indeterminateness，[讯] ambiguity，ambiquity ；

[例句] 在以下三种状态中,每一种状态都由一种互不相同的不定性所表征. Each of the three following situations is characterized by a different kind of uncertainty.

[例句] 在这点,证据是十分确凿的, 但尚有不定性. Here too the evidence is positive, though tentative.

injustice，inequity，wrong ；

[例句] 你或许是个怀疑论者，会把它归因于生活的不公正。 You may be a sceptic and put it down to life's inequalities.

[例句] 他要求纠正他所声称的不公正的降级这一错误。 He is seeking redress for what he alleges was an unfair demotion.

（不甘心； 不情愿） unreconciled to，not resigned to，will not take it lying down，unwilling ；

[例句] 克罗地亚不甘人后，提出了他们自己的维和方案。 Not to be outdone, the Croats came up with a peacekeeping proposal of their own.

[例句] “ 好吧. ” 萨利不甘心地叹了一口气. " All right, " with a sigh and reluctantly.

differ in，deffer from，be different from，differentiate from，be differ from ；

[例句] 这趟行程不同于他1990年的首次衣锦还乡。 This trip was not like his first triumphant return home in 1990.

[例句] 法语不同于英语,所有的名词都有性. French differs from English in having gender for all nouns.

not clear，unknown，（不明白） fail to understand ；

[例句] 看得出科恩并不明白米勒德想说什么。 It was clear Cohen didn't understand what Millard was driving at.

[例句] 有大量疾病是由不明环境因素造成的。 A surprising number of ailments are caused by unsuspected environmental factors.

disturbed，intranquil，unstable，uneasy，nervous ；

[例句] 这是一篇剖析民族主义的让人不安的文章。 This was a troubling essay on the anatomy of nationhood.

[例句] 他的人民在混乱不安的泥潭里越陷越深。 His people had fallen further and further into a quagmire of confusion.

agensis ；

[例句] 当反射和绕射相当不发育时,这些波看上去很清楚. The waves are sometimes seen clearly when reflections and discrimination are rather poorly developed.

[例句] 艾滋病病毒在蚊子体内既不发育也不会复制,蚊子嘴上残留的血液量微乎其微,远不足以引起传染. The trace amount of the virus on the mosquito is not sufficient to cause an infection.