naive
adj. simple and credulous as a child； ingenuous 天真的
a naive remark 幼稚的话/a naive girl 天真的女孩/a naive argument 幼稚论点/a naive belief 幼稚的信念
This naive simple creature was so eager to believe appearances.
这个天真的小家伙如此轻易相信表面现象。
narrative
n. story or tale 叙述文，故事 orderly account of events； composition that consists of story|telling 叙述，讲述
a narrative poem 一首叙事诗/a narrative of an exciting journey 令人兴奋的旅行的叙述/a master of narrative 讲故事的能手/the narrative art 讲故事的艺术，叙事艺术/the narrative line 连续性故事/the narrative skill 叙述技巧/the narrative picture 有故事
His trip through Asia made an interesting narrative.
他的亚洲之行是个有趣的故事。
nasty
adj. disgustingly dirty 肮脏的 morally offensive； indecent 猥亵的，下流的 malicious； spiteful 恶意的；卑鄙的
nasty weather 令人厌恶的天气/a nasty person 一个卑鄙的人/ a nasty story 一个猥亵的故事/a nasty room 一个肮脏的房间/a nasty accident 严重的事故/a nasty cut 严重的伤口/a nasty trick 令人生气的诡计/a nasty puzzle 难以解决的疑团/a nasty problem 难以解决的问题/be nasty to sb. 跟某人闹别扭
I want us to be friends， but she is nasty to me.
我希望我们成为朋友，但她同我合不来。
necessitate
v. to make necessary or unavoidable 使需要；使成为必需
necessitate a change 需要改变/necessitate a food supply 需要食物供应/be necessitated to do sth. 被迫做……
negligible
adj. a little importance or size； not worth considering 微不足道的
a negligible quantity 可忽略的量（因素）/a negligible amount 微量/a negligible error 一个无关紧要的差错
The damage to my car was negligible in the accident， but I have a lingering fear even today.
在事故中我的车受损不算大，但直至今日我仍心有余悸。（2000年1月阅读理解）
negotiate
ｖｔ. to try to reach an agreement by discussion 谈判达成，洽谈，协商 to go safely over 顺利通过，成功越过 vi. through along， etc. 协商，谈判
作不及物动词时后接with+sb.(sth.)+about(on， over，for)。negotiate作及物动词用时，意为“通过谈判达成或解决；谈成”。如：negotiate a treaty(agreement)(通过谈判订立条约/协议)；negotiate a business transaction(谈成一笔生意)。
negotiate a sale 商订销售事宜/negotiate a new contract 达成一项新协议
nickel
n. a silvery， hard， ductile， ferromagnetic metalid element used in alloys， in corrosionresistant surfaces and batteries， and for electroplating 镍 a U.S. coin worth five cents， made of a nickel and copper alloy （美国和加拿大的）五分镍币
don t take any wooden nickels 多加小心，别再上当
nightmare
n. a dream arousing feelings of intense fear， horror， and distress 噩梦 an event or experience that is intensely distressing 使人极其痛苦的事情或经历
But dreams easily turn into nightmares. Every American who hopes to “make it” also knows the fear of failure， because the myth of success inevitably implies comparison between the haves and the havenots， the stars and the anonymous crowd.
但是，梦想很容易就变成噩梦了。每个渴望成功的美国人同时也害怕失败，因为成功的神话不可避免地意味着在有钱人和穷人、名人和普通人之间进行比较。(2006年1月阅读理解)
nominal
adj. in name or form but not in reality 名义上的，有名无实的，标定的，额定的 very small，negligible 微不足道的
a nominal sum 微小的数目/nominal rating (value) 额定值(面价，标称值)/nominal chairman 名誉主席/the nominal value of the shares 股票的票面价值
The old man is only the nominal head of the business； his daughter makes all the decisions.
那老人只是这家商行名义上的老板，所有决定均由女儿做出。
nominate
v. to propose by name as a candidate， esp. for election 提名 to designate or appoint to an office， a responsibility， or an honor 任命，委任
nominate sb. as... 任命某人为……/nominate sb. as the Premier 任命某人为总理/nominate sb. for... 提名某人为……的候选人/nominate sb. for the Presidency 提名某人为总统候选人/nominate sb. to the committee 任命某人为委员会委员/nominate unanimously 一致提名
He has been nominated as candidate for the presidency.
他已被提名为总统的候选人。
nonetheless
nevertheless 尽管如此；依然；然而
It s not cheap but I think we should buy it nonetheless.
这个虽然不便宜，但我觉得我们还是应该买。
norm
n. a standard， model， or pattern regarded as typical 标准，规范，准则
below norm 限额（标准）以下/norm in kind 实物定额/age norm 正常年龄标准/average norm 平均定额/work norms 工作定额/fulfil one s norm 完成工作量/set the teachers a norm 给教师定标准工作量
You must adapt to the norms of the society you live in.
你必须使自己适应你所处社会的行为准则。
notable
adj. worthy of note or notice； remarkable 著名的，值得注意的，显著的 n. a person of distinction or great reputation 名人
a notable beauty 引人注意的美人/a notable event 值得注意的事件/ play a notable role 起显著的作用/a notable painter 著名画家
They are the most notable pioneers in this field.
他们是该领域最有名的先驱。
notation
n. system of signs， symbols， etc used to represent numbers， amounts， musical notes， etc （代表数字、数量等的）一套符号；（音乐的）乐谱，记谱法 representing of numbers， etc by such signs， symbols， etc (有系统的）符号，数字，音符
musical notation 音乐符号/Arabic notation 阿拉伯符号/chemical notation 化学符号/abbreviative notation 缩写标记/dance notation 舞步谱号/numerical notation 数字符号
He made a notation on the margin of the paper.
他在文件的纸边作了批注。
notify
v. to give notice of； make known 通知；使……为所知
I notified him that the meeting had been postponed. 我通知他会议已经延期了。
notion
n. a belief or opinion 思想或观念
have a good notion of 很懂得/have a notion that... 认为/have no notion of 不明白；完全不懂；没有……的意思/想法
From offering classes that teach students how to legally manipulate contracts，to reinforcing the notion of profit over community interests，Etzioni has seen a lot that s left him shaking his head.
从教学生怎样合法操纵合同，到给学生强化利润高于公共利益的观念，伊兹欧尼见过的许多事情都令他摇头。(2006年12月)
notorious
adj. widely known esp. for sth. bad 臭名昭著的，声名狼藉的
notorious只用作贬义，指在坏的、不好的方面出了名。反义词是famous。如：a notorious thief(劣迹昭彰的窃贼)；a politician notorious for his double dealing(以两面派手法出名的政客)。
be notorious as/for 因……而臭名昭著
That part of the city has long been notorious for its street violence.
该城市的这一区段一直因街头暴力而出名。（2000年1月阅读理解）
The man was reported for his notorious acts.
那人因恶劣的行为而被报道。
notwithstanding
prep. in spite of 虽然，尽管 adv. all the same； nevertheless. 尽管，还是 conj. in spite of the fact that； although 虽然，尽管
He got drunk at the party notwithstanding his wife s warning.
尽管妻子警告他，他还是在宴会上喝得烂醉。
nourish
v. to provide with food or other substances necessary for life and growth 滋养，使健壮 to maintain or increase (a hope， hatred， etc.) 怀（希望、仇恨等）
nourishing food 滋补食物/nourish feelings of hatred 怀恨在心/nourish a deep affection for sb. 深爱某人/nourish a hope 怀有希望/nourish an infant with milk 用牛奶哺育婴儿/sit up and take nourishment 病好了；复原了
Most plants are nourished by water drawn up through their roots.
大多数植物靠根部吸收的水分汲取养料。
novelty
n. quality of being novel； newness； strangeness 新奇；新颖；奇异 previously unknown thing， experience， etc； new or strange thing or person 新鲜的事物、经验等；新奇的事物或人
novelty goods 新奇商品/a novelty toy 新玩具/a novelty shop 出售新奇物品的商店/an architectural novelty 新奇的建筑/a welcome novelty 受欢迎的新奇事物/crave novelties 渴求新奇事物
The novelty of his surroundings soon wore off， ie he grew accustomed to them.
他对环境的新鲜感很快就消失了。
numerical
adj. of， expressed in or representing numbers 数字的；以数字表示的；表示数字的
in numerical order 按数字顺序/numerical symbols 表示数字的符号
nutrition
n. the process of nourishing or being nourished， esp. the process by which a living organism assimilates food and uses it for growth and for replacement of tissues 营养，营养学
holophytic nutrition 植物式营养/holozoic nutrition 动物式营养/mineral nutrition 矿质营养/improve nutrition 改善营养/lack nutrition 缺乏营养/adequate nutrition 充足的营养
A balanced diet provides nutrition for your body.
均衡的食物使你的身体获得营养。