affirmatory，assured，[计] definitized，established，certain ；

[例句] 土地的价值是无法确定的。 It is impossible to be sure about the value of land.

[例句] 她的眼神里有种难以确定的东西。 There was something indefinable in her eyes.

blurry，misty，dark，dim，faint ；

[例句] 她对英国的监狱问题只有些许模糊的认识。 She had only a hazy idea of Britain's prison problems.

[例句] 他只能看见球门柱模糊的轮廓。 He could see only the hazy outline of the goalposts.

conservative，old-fashioned，backward-looking，insular，Biedermeier ；

[例句] 海格被自己那一套保守的战略战术所束缚。 Haig was limited by his blinkered approach to strategy and tactics.

[例句] 该公司保守的本性不利于竞争。 The company's conservative instincts sit ill with competition.

diplex，diploid，two-tier，twofold，double ；

[例句] 新坐标系和坐标曲面的价值是双重的. The value of the new Cordinate Systems and surfaces is twofold.

[例句] 他们的目标是双重的: 通货膨胀与失业. Their targets were twofold: inflation and unemployment.

fragile，frangible，[医] friable，brittle，breakable ；

[例句] 他爬进来的时候，那件易碎的工艺品摇晃起来。 The frail craft rocked as he clambered in.

[例句] 池塘覆盖了一层易碎的冰. The pond was covered in a brittle layer of ice.

ceremonial，formal，plenary，official，full-dress ；

[例句] 他们15岁就辍学了，几乎未接受过正式的写作训练。 They had left school at fifteen and were quite untutored in writing.

[例句] 从某些方面来说，正式的开幕仪式只不过是走个形式。 In some ways, the official opening is a formality.

supreme，grand，[医] maximal，highest，altissimo ；

[例句] 7.7万英亩的私人土地上有5座苏格兰最高的山峰。 The 77,000-acre estate contains five of the highest peaks in Scotland.

[例句] 作为最高的处罚，他们可以出售他们的股份。 As an ultimate sanction, they can sell their shares.

grand，grave，great，gross，fatal ；

[例句] 我再也无可奉告了，这本是重大的秘密。 I can't say any more, it's meant to be a big secret.

[例句] 赢得如此重大的比赛确实使我信心倍增。 It did give me a boost to win such a big event.

onefold，simplex，[机] mono-，single，haploid ；

[例句] 许多理论都标榜以单一的原因解释生长. Many theories purport to explain growth in terms of a single cause.

[例句] 所有喇叭都接在单一的扩音器上. All the speakers hook up to a single amplifier.

middle，medial，[计] intervening，intermediary，in-between ；

[例句] 制服上装中间的纽扣在他的肚子上绷得紧紧的。 The middle button of his uniform jacket was strained over his belly.

[例句] 上天就像导演电影那样安排我们的人生，中间的起起伏伏，为的只是最后的完美收场。 God's plan is like a movie. All the good and bad things are arranged together for the good ending.

absolute，very，categorical，implicit，assoluta ；

[例句] 工业部长将此事件形容为“绝对的丑闻”。 The industry minister described the affair as "an absolute scandal".

[例句] 我对它有绝对的把握。 I'm as positive as I can be about it.

additional，auxiliary，[医] adjunct，fringe，accessional ；

[例句] 我有一把锁,可是另外又买了一把作为附加的防盗保障. I have one lock but I bought another as an additional insurance against thieves.

[例句] 这些附加的离子叫做填隙式离子. These additional ions are called interstitial ions.

contrary，opposite，[机] inverse，opposed，abhorrent ；

[例句] 本文所持的论点恰恰是站在相反的立场。 The argument contained herein takes exactly the opposite point of view.

[例句] 错误的态度会产生完全相反的效果。 The wrong attitude will have exactly the reverse effect.

light，jaunty，agile，airy，brisk ；

[例句] 以轻快的步伐上路 to set off at a brisk pace

[例句] 轻快的舞蹈给这场戏渲染了欢乐气氛. The lively dance heightened the joyous atmosphere of the scene.

clumsy，inept，[医] sinstrous，awkward，footless ；

[例句] 他是个个子高而笨拙的18岁小伙子。 He was a tall, ungainly boy of 18.

[例句] 这些笨拙的古怪作品似乎在传达信息。 These elephantine oddities seem to carry messages.

natural，spontaneous，[医] Indian physic，unaffected，artless ；

[例句] 花园充其量不过是抗拒自然的一时之法。 A garden is, at best, a holding operation against nature.

[例句] 他怨恨你是很自然的事。 It is only natural that he should resent you.

deleterious，nocuous，venomous，viperous，mephitical ；

[例句] 那个化工厂排出大量有毒的废水. A lot of poisonous waste water comes from that chemical factory.

[例句] 要是塑料和橡胶被焚, 就会放出有毒的气体. If plastic and rubber are burnt, they'll give off poisonous gases.

fine，healthy，laudable，hygeian，castiron ；

[例句] 限制饮食和放松身心是保持健康的两个要诀。 Diet and relaxation are two important keys to good health.

[例句] 伦道夫的著作专门论述污染对健康的影响。 Randolph's work was exclusively concerned with the effects of pollution on health.

hard，stiff，callous，flinty，firm ；

[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.

[例句] 恐龙峡谷中的化石都嵌在坚硬的砂岩中。 The fossils at Dinosaur Cove are embedded in hard sandstones.

weak，debilitated，[医] asthenic，catheretic，frail ；

[例句] 这是他们虚弱的反映. This is a reflection of their frailty.

[例句] 他已经很虚弱的身体受着高烧的折磨。 His already infirm body was racked by high fever.