aridity，infertility，sterility ；

[例句] 您越过不毛之年的沙漠而到达了圆满的时刻. Thou crossest desert lands of barren years to reach the moment of fulfilment.

[例句] 植物覆盖的地面变暖和变冷比不毛地面慢. Land areas blanketed with vegetation heat and cool more slowly than barren areas do.

pay no attention to，refuse to acknowledge，take no notice of，ignore，go-by ；

[例句] 他转身不理他们，噔噔噔地爬上了山。 He turned his back on them and stomped off up the hill.

[例句] 初次相见时她表现冷淡并有点爱搭不理。 On first acquaintance she is cool and slightly distant.

errant，incomplete，top-heavy，variable，inconstant ；

[例句] 迟疑不定的感受 a feeling of doubt and uncertainty

[例句] 这场大雨也许能使变幻不定的天气稳定下来. The heavy rain might settle the changeable weather.

don't ；

[例句] 不要等待好事降临，你要向幸福进发。 Do not wait for good things to happen to you. You need to walk towards happiness.

[例句] 他呼吁自己的同胞不要丧失信心。 He appealed to his countrymen not to lose heart.

（正确） correct，right，not bad，ok ；

[例句] 道格拉斯29岁，是个技术不错的拳击手，在以前的比赛中发挥不太稳定。 Douglas was a 29-year-old journeyman fighter, erratic in his previous fights.

[例句] 比利·沙利文给我留下的印象是他是个很不错的人。 Billy Sullivan had impressed me as a fine man.

tumbler，roly-poly ；

[例句] 不倒翁首相又挺过了一次危机。 The Teflon Prime Minister has survived another crisis.

[例句] 不倒翁吱扭吱扭地摇摆着. The self - righting doll is swaying with a creaking sound.

unimportant，not serious，it doesn't matter，never mind ；

[例句] 不要紧，他仍是众人心目中的英雄。 No matter, he remained the hero of the crowds.

[例句] 不要紧，别哭了。 It's all right. Don't cry.

not allow，not permit，must not，prohibited，disallow ；

[例句] 我们谨记母亲不许我们在人前炫耀的严厉教诲。 We remember our mother's stern instructions not to boast.

[例句] 有严格的着装规定：不许穿运动鞋和牛仔裤。 There is a strict dress code: no trainers or jeans.

fail，flunk，disqualified，failure ；

[例句] 这是及格和不及格的差别. It'sthe difference between a pass and a fail.

[例句] 我二年级时数学不及格。 I flunked math in second grade.

ceaseless，endless，never-ending，unceasing，incessant ；

[例句] 不停的下雨使我厌倦. I am tired of this continual rain.

[例句] 吠个不停的狗会惹邻居烦恼. A dog that barks constantly can be a source of annoyance to the neighbours.

immature，juvenility ；

[例句] 他还是个毛头小子，幼稚得很，一点都不成熟。 He was a young lad, very green, very immature.

[例句] 他暗示我们情感上还不成熟。 He implied that we were emotionally immature.

differently，dissimilarly，diversely，variously，other ；

[例句] 不同地区间的经济不平衡 economic inequalities between different areas

[例句] 据估计, 20个人中有19个人可程度不同地被催眠,如果他们想被催眠并相信催眠的人. According to one estimate, about 19 in 20 people can be hypnotizd to some degree if they want to be and if they trust the hypnotist.

derecognition，nonrecognition，disavow，disavowal ；

[例句] 那两个人也许不承认，可他们非常相像。 The two men were far more alike than they would ever admit.

[例句] 我们与他当面对质时，他什么都不承认。 When we confronted him, he denied everything.

discord，disharmony，incompatibility ；

[例句] 这是她和总统不和谐的另一方面. That is another way in which she and the President weren't compatible.

[例句] 祸患已成,不和谐的事情越来越多. The harm is done, the dissonances multiply.

unbecoming，ill-matched，unsuited，out of proportion，disproportional ；

[例句] 他们强烈感受到他们的宗教信仰与政治体制不相称。 They feel strongly that their religion is incompatible with the political system.

[例句] 这样大发脾气与他所树立的个人形象不相称。 The outburst was inconsistent with the image he has cultivated.

aciesis，acyesis，dysgenesia，dysgenesis，sterility ；

[例句] 该病会导致男女不孕不育。 This disease causes sterility in both males and females.

[例句] 对不孕不育的治疗很大程度上视乎夫妇的经济能力。 The treatment of infertility is largely dependent on the ability of couples to pay.

impossible，impossibility，out of the question，when the devil is blind ；

[例句] 奇迹就是看似不可能，却发生了。 A miracle is something that seems impossible but happens anyway.

[例句] 风险不可能完全消除，但可以通过防范和培训来降低。 You could never eliminate risk, but preparation and training could attenuate it.

inaccurate ；

[例句] 很多答案都不准确，为此他感到很烦恼。 He was disturbed by the inaccuracy of the answers.

[例句] 这个被用来掩盖他们思想的混乱和不准确。 This served to hide the confusion and imprecision in their thinking.

unskilled，inexperience，inexpertness，nonproficiency ；

[例句] 他太缺乏经验，太不熟练，难以成功。 He was too inexperienced and too inexpert to succeed.

[例句] 他对工作还不熟练. He is raw to his work.

[化] insoluble，undissolved ；

[例句] 胡萝卜素不溶于水，但可溶于油类和脂肪。 Carotenes are insoluble in water and soluble in oils and fats.

[例句] 这些化学物质几乎不溶于水. These chemicals are practically insoluble in water.