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A2 noun /ˈnoʊtbʊk/

notebook

Meaning
a small book with blank or ruled pages for writing notes; also a portable computer
Example
She opened her notebook to jot down some ideas.
A1 adverb /nɪər/

Near

近
Meaning
close in space or time; almost
Example
The school is very near to my house.
学校离我家很近。
A2 adjective ˈnesəseri

necessary

必要
Meaning
Required to be done, achieved, or present; essential.
Example
Strict regulations are necessary for maintaining order.
严格的规定是必要的，以保持秩序。
C2 noun /ˈnɒn.ɪʤ/

Nonage

未成年时期
Meaning
the period of being under the legal age of majority; youth or immaturity
Example
During his nonage, all legal decisions were made by his guardian.
在他未成年时期，所有法律决定都由他的监护人作出。
A2 conjunction /ˈniːðər/

neither

既不
Meaning
used to connect two negative alternatives
Example
Neither the manager nor the assistant could attend the meeting.
经理和助理都无法参加会议。
A1 adverb /ˈnɛvər/

never

从不
Meaning
at no time in the past or future; not ever
Example
I have never seen such a beautiful sunset.
我从未见过如此美丽的日落。
C1 noun /ˈnɒnʃələns/

nonchalance

漫不经心
Meaning
A relaxed and calm state, showing lack of concern or interest.
Example
She answered the tough questions with surprising nonchalance.
她用出人意料的漫不经心回答了那些难题。
C1 noun ˈnɛktər

Nectar

花蜜
Meaning
A sweet liquid produced by flowers that serves as food for butterflies.
Example
Butterflies drink nectar from flowers.
蝴蝶从花朵中喝取花蜜。
C2 noun /niˈɒlədʒi/

neology

使用新词或研究其起源
Meaning
The use of new words or the study of their origin.
Example
The professor specialized in neology, studying the creation of modern slang.
教授专注于新词学，研究现代俚语的创造。
C1 noun ˈnærətɪv staɪl

narrative style

叙事风格
Meaning
The way in which a story is told, including the point of view and the voice of the narrator.
Example
Dickens' narrative style is engaging and emotional.
狄更斯的叙事风格引人入胜且富有情感。
C2 noun /niːp/

neap

低潮
Meaning
A tide just after the first or third quarters of the moon when the difference between high and low tide is least.
Example
During a neap tide, the water level change is minimal.
在低潮期间，水位变化最小。
B2 noun /ˈnɒvəlɪst/

novelist

小说家
Meaning
a person who writes novels
Example
The novelist spent years writing his new book.
小说家花了多年写他的最新小说。
C2 noun /ˈnaɪɪˌlɪzəm/

nihilism

虚无主义
Meaning
The rejection of all religious and moral principles, often in the belief that life is meaningless.
Example
The philosopher was criticized for promoting nihilism.
哲学家因提倡虚无主义而受到批评。
B2 noun /ˈnɪk.neɪm/

Nickname

昵称
Meaning
a familiar or humorous name given to a person instead of their real name
Example
His nickname is 'Tiger' because he's so brave.
他的昵称是'老虎'因为他非常勇敢。
C1 noun /ˈneb.jʊ.lə/

nebula

星云
Meaning
A cloud of gas and dust in outer space, sometimes visible in the night sky.
Example
The Orion Nebula is one of the brightest in the sky.
猎户座星云是天空中最明亮的之一。
C1 noun /ˈnɛkˌlaɪn/

neckline

领口
Meaning
the edge of a garment around the neck, especially as cut to form a particular shape
Example
The dress has a beautiful V-shaped neckline.
这件裙子有一个漂亮的V形领口。
C2 adjective /ˈnjuːmɪnəs/

numinous

神秘的
Meaning
having a strong spiritual or mysterious quality
Example
The temple had a numinous atmosphere that inspired awe.
这座寺庙有一种神秘的氛围，令人敬畏。
C1 adjective /ˈnɒnʃələnt/

nonchalant

Meaning
Appearing calm, casual, and unconcerned.
Example
He gave a nonchalant shrug and walked away.
A2 adverb /ˈnɔːməli/

Normally

通常
Meaning
in the usual way; under normal circumstances
Example
I normally wake up at 7 AM every day.
我通常每天早上7点醒来。
C2 noun /ˌɛn.biː.esˈpiː/

nbsp

不间断空格
Meaning
a non-breaking space character in HTML used to prevent an automatic line break at its position
Example
Use   in HTML to add a space that won't break into a new line.
在HTML中使用 添加一个不会换行的空格。
A2 adjective /ˈnɔːti/

naughty

顽皮
Meaning
Disobedient or mischievous, often in a playful or mildly bad way.
Example
The naughty child drew on the walls with crayons.
顽皮的孩子用蜡笔在墙上画画。
A1 noun neɪmz

Names

名字
Meaning
A word or set of words by which a person or thing is known.
Example
Names of family members are written on the family tree.
家庭成员的名字写在家谱上。
B2 adjective /ˈneɪbərɪŋ/

neighboring

邻近的
Meaning
situated near or next to another place; adjacent or nearby.
Example
They visited a neighboring village for the festival.
他们去邻村参加节日活动。
B1 noun /ˈnaɪt.meər/

Nightmare

噩梦
Meaning
a frightening or unpleasant dream; a very unpleasant experience
Example
The exam was a complete nightmare for unprepared students.
考试对未准备的学生来说是一场彻底的噩梦。
B1 noun /nuːn/

noon

中午
Meaning
12 o'clock in the daytime; midday
Example
The meeting will start at noon.
会议将在中午开始。
C1 noun /ˈnʌt.meg/

Nut meg

肉豆蔻
Meaning
a spice made from the seed of the fruit of an evergreen tree, used in cooking and baking
Example
The recipe called for a teaspoon of ground nutmeg to flavor the custard.
食谱中要求用一茶匙磨碎的肉豆蔻来调味蛋奶冻。
B2 adjective, adverb /ˈneɪʃənˌwaɪd/

nationwide

全国范围
Meaning
existing or happening throughout an entire nation
Example
The campaign received nationwide support.
这项运动得到了全国范围的支持。
A2 noun /nɔɪz/

Noise

噪音
Meaning
a sound, especially one that is loud or unpleasant
Example
The noise from the construction site was very disturbing.
施工现场的噪音非常扰人。
B2 adverb /ˌnʌnðəˈlɛs/

nonetheless

尽管如此
Meaning
in spite of that; nevertheless
Example
It was raining, but nonetheless, they went hiking.
下着雨，但尽管如此，他们还是去远足了。
B2 adjective /ˌnɒnˈprɒfɪt/

nonprofit

非营利组织
Meaning
an organization that does not aim to make a profit, often serving a social or charitable purpose.
Example
She works for a nonprofit organization that helps children.
她为一个帮助孩子的非营利组织工作。
C2 noun /niːˈɒkrəsi/

neocracy

由无经验或新官员领导的政府
Meaning
A government or leadership run by inexperienced or new officials.
Example
The sudden revolution led to a neocracy with inexperienced leaders.
突如其来的革命导致了一个新政府，由经验不足的领导人执政。
C2 verb /ˌnɒnˈplʌst/

nonplused

困惑的
Meaning
Past tense of nonplus; surprised and confused.
Example
She was completely nonplused by his sudden decision.
她完全被他突如其来的决定弄得不知所措。
B2 noun ˈneɪʧər ɪnˈθjuːziæsts

Nature Enthusiasts

自然爱好者
Meaning
People who have a passionate interest in and love for the natural world and outdoor activities.
Example
Nature enthusiasts often visit Sajek Valley for its scenic beauty.
自然爱好者常常前往萨杰克山谷，欣赏其美丽的景色。
B1 adverb /ˈnætʃərəli/

Naturally

自然地
Meaning
in a natural manner; as expected; of course
Example
She naturally excels in mathematics.
她在数学上自然地出色。
B2 adjective /njuːˈtrɪʃ.əs/

Nutritious

有营养的
Meaning
containing substances that help the body grow and stay healthy; nourishing
Example
Eating nutritious food helps maintain good health.
吃有营养的食物有助于保持身体健康。
C1 adjective /ˈneɡ.lɪ.dʒə.bəl/

Negligible

微不足道
Meaning
so small or unimportant as to be not worth considering; insignificant
Example
The side effects of this medicine are negligible.
这种药物的副作用微不足道。
C1 noun /ˈnoʊmæd/

nomad

游牧民
Meaning
A person who has no permanent home and moves from place to place.
Example
The desert was once home to nomads who lived by herding animals.
沙漠曾经是游牧民的家，他们靠放牧生存。
C1 noun /ˈnɑː.sɪ.sɪ.zəm/

narcissism

自恋
Meaning
Excessive interest in or admiration of oneself; extreme selfishness.
Example
His excessive narcissism made it difficult for him to empathize with others.
他的过度自恋让他很难同情他人。
C2 noun /ˈnɪn.i/

Ninny

傻瓜
Meaning
a silly or foolish person; someone who lacks common sense
Example
Don't be such a ninny, use your brain!
不要做傻瓜，动动脑子！
C2 adjective /ˈnɛðər/

nether

下方的
Meaning
situated down or below; lower
Example
They explored the nether regions of the cave.
他们探险了洞穴的下方区域。
A1 verb /neɪm/

name

命名
Meaning
to give a title or designation to someone or something
Example
They decided to name their baby Sarah.
他们决定把他们的宝宝命名为莎拉。
B2 verb /nɪˈɡlekt/

neglect

忽视
Meaning
to fail to care for or give attention to something
Example
Don't neglect your health while studying.
学习时不要忽视自己的健康。
B2 adjective /nəˈtɔːriəs/

notorious

臭名昭著
Meaning
Famous or well-known for something bad or undesirable
Example
The area is notorious for its high crime rate.
该地区因其高犯罪率而臭名昭著。
C1 adverb /ˈnɔːθwədz/

Northwards

向北
Meaning
towards the north; in a northerly direction
Example
The birds migrate northwards in spring.
鸟类在春天向北迁徙。
C1 adjective ˌnɒnˈvɜːr.bəl

nonverbal

非语言
Meaning
Communication using body language, facial expressions, or gestures instead of words
Example
Nonverbal cues play a crucial role in effective communication.
非语言提示在有效沟通中起着至关重要的作用。
C2 noun /ˌnjuːməˈreɪʃən/

numeration

计数
Meaning
the action or process of counting or assigning numbers
Example
The teacher explained the basics of numeration to the students.
老师向学生解释了计数的基础知识。
C2 noun /næˈteɪʃən/

natation

游泳
Meaning
The act or sport of swimming.
Example
She took lessons in natation to improve her swimming skills.
她参加了游泳课程，以提高她的游泳技巧。
A2 noun /nʌt/

nut

坚果
Meaning
a hard-shelled fruit that contains a seed, or a small metal piece used in machinery
Example
She ate a peanut, which is a type of nut.
她吃了一颗花生，这是坚果的一种。
C2 adjective /ˌnɒnkəˈmɪtl̩/

noncommittal

Meaning
Not expressing or showing a clear opinion, decision, or commitment.
Example
She gave a noncommittal reply when asked about her future plans.
C2 adjective ˌnjʊə.rəʊ.prəˈtek.tɪv

neuroprotective

神经保护
Meaning
Having the ability to protect nerve cells from damage, degeneration, or impaired function.
Example
Omega-3 fatty acids have neuroprotective benefits.
欧米伽-3脂肪酸具有神经保护作用。
B2 adverb /ˈnɔɪzɪli/

Noisily

喧闹地
Meaning
in a way that makes a lot of noise; loudly
Example
The children were playing noisily in the playground.
孩子们在操场上喧闹地玩耍。
A2 pronoun /nʌn/

none

没有人
Meaning
not any; no one; not one
Example
None of the students passed the exam.
没有学生通过考试。
C2 adjective /ˌnɒnpəˈreɪl/

nonpareil

无与伦比
Meaning
Having no equal; unrivaled or matchless.
Example
Her beauty was considered nonpareil in the region.
她的美貌在该地区被认为是无与伦比的。
A1 noun /naɪt/

night

夜晚
Meaning
the time of darkness between one day and the next, when most people sleep
Example
She loves going for walks at night.
她喜欢晚上散步。
B1 noun/adjective /ˈnɒvəl/

novel

小说 / 新的
Meaning
A long fictional narrative; also something new or unusual.
Example
She spent the weekend reading a historical novel.
她在周末阅读了一本历史小说。
B2 adjective /ˈnær.ə.tɪv/

Narrative

叙述的; 描述性的; 讲述故事的
Meaning
relating to storytelling; descriptive; telling a story; recounting events
Example
The narrative structure of the novel was quite complex.
这本小说的叙述结构相当复杂。
A2 adjective /ˈnɜː.vəs/

Nervous

紧张, 焦虑
Meaning
feeling anxious or worried; relating to the nerves; easily agitated
Example
She felt nervous before her job interview.
她在面试前感到紧张。
B2 adjective /ˈniː.di/

Needy

贫困的; 需要帮助的; 缺乏基本生活必需品的
Meaning
requiring help or support; poor; lacking basic necessities
Example
The charity helps needy families during the winter.
慈善在冬季帮助贫困家庭。
C1 adjective /ˈneɪzl/

nasal

鼻音的
Meaning
Relating to the nose; a sound produced through the nose.
Example
He spoke with a nasal voice due to his cold.
他因感冒说话带有鼻音。
B1 noun /ˈneɪvi/

Navy

海军
Meaning
the branch of armed forces that conducts military operations at sea
Example
He joined the navy after graduating from college.
他在大学毕业后加入了海军。
C2 adjective ˌnjʊəroʊˈkɒɡnɪtɪv

neurocognitive

神经认知
Meaning
Related to brain information processing and memory power
Example
Neurocognitive functions decline due to lack of sleep.
由于缺乏睡眠，神经认知功能下降。
C2 noun /ˈneɪdɪər/

nadir

Meaning
The lowest point of a situation or condition.
Example
The company reached its nadir during the financial crisis.
A1 adjective /njuː/

new

新的
Meaning
recently made, discovered, or introduced; not existing before
Example
He bought a new car yesterday.
他昨天买了一辆新车。
C2 adjective /ˈnɒmɪk/

nomic

与法律相关
Meaning
Relating to laws, rules, or systems.
Example
The philosopher discussed the nomic necessity of natural laws.
哲学家讨论了自然法则的诺米克必要性。
A1 adjective /nɛkst/

next

下一个
Meaning
immediately following in time, order, or place
Example
The next train leaves at 9:00 AM.
下一班火车将在上午9:00出发。
C1 noun /njʊˈrɑːlədʒi/

neurology

Meaning
The branch of medicine that deals with disorders of the nervous system.
Example
She specializes in neurology and treats patients with brain diseases.
C1 adjective /ˈnjʊrəl/

neural

Meaning
Relating to nerves or the nervous system.
Example
Scientists study neural connections in the brain.
C1 noun njuːˈtræl.ə.ti

neutrality

中立
Meaning
The state of not supporting or helping either side in a conflict, disagreement, etc.; impartiality.
Example
Neutrality fosters trust in decision-making.
中立有助于决策中的信任。
C1 verb /ˈnɪbəl/

nibble

啃
Meaning
to take small bites of food
Example
The rabbit nibbled on a carrot.
兔子咬着胡萝卜。
A2 pronoun /ˈnoʊˌbɑːdi/

nobody

没有人
Meaning
no person; not anyone
Example
Nobody came to the party.
没有人来参加派对。
B2 noun /ˈnoʊ.ʃən/

Notion

概念
Meaning
a conception or belief about something; an idea or opinion
Example
She had a strange notion that someone was following her.
她有一个奇怪的概念，认为有人在跟踪她。
C1 noun /ˈniːdəlwɜːrk/

needlework

针线活, 刺绣
Meaning
The craft of sewing, embroidery, or knitting done with a needle.
Example
Her grandmother taught her the art of needlework.
她的祖母教她针线活的艺术。
A2 noun /ˈnɛtˌwɜrk/

network

网络
Meaning
A system of interconnected people, things, or computers.
Example
She built a strong professional network.
她建立了一个强大的职业网络。
C1 noun /ˈnaɪt.fɔːl/

nightfall

夜幕降临
Meaning
the time when night begins; dusk
Example
They decided to return home before nightfall.
他们决定在夜幕降临之前回家。
A1 noun /naɪn/

nine

九
Meaning
the number that is one more than eight
Example
She has nine books in her collection.
她的收藏里有九本书。
C2 noun /ˈnoʊzˌɡeɪ/

nosegay

花束
Meaning
a small bunch of flowers, typically given as a gift or carried for decoration
Example
She carried a nosegay of fresh roses to the ceremony.
她拿着一束新鲜的玫瑰花去参加仪式。
B2 adverb /ˌnɛvəðəˈlɛs/

nevertheless

Meaning
in spite of that; however
Example
He was tired; nevertheless, he kept working.
C1 adjective /ˈnjuː.ɑːnst/

nuanced

微妙的
Meaning
Characterized by subtle shades of meaning or expression; having fine gradations of meaning, tone, or feeling.
Example
His analysis of the novel was highly nuanced.
他对这部小说的分析非常微妙。
B2 noun /ˌnɒməˈneɪʃən/

nomination

提名
Meaning
The act of formally proposing someone for a role, position, or award.
Example
Her nomination for the award surprised everyone.
她的奖项提名让大家都感到惊讶。
C1 adjective/noun /ˈnɜːr.tʃɚ.ɪŋ/

nurturing

培养, 促进, 发展
Meaning
The process of caring for and encouraging growth or development.
Example
A nurturing environment helps children thrive.
一个 nurturing 环境帮助孩子们茁壮成长。
C1 noun /ˈnjuːɑːns/

nuance

细微差别
Meaning
A subtle difference in shade of meaning, appearance, or sound.
Example
He noticed the subtle nuance in her expression.
他注意到她表情中的细微差别。
C1 verb /ˈnuːtər/

neuter

去势
Meaning
To remove the reproductive organs of an animal; or having no gender.
Example
They decided to neuter their cat to prevent more kittens.
他们决定给猫去势，以防止更多小猫的出生。
C2 noun /nəˈkrɒpəlɪs/

necropolis

古代墓地
Meaning
a large ancient cemetery with elaborate tombs
Example
The archaeologists discovered artifacts in the necropolis of the ancient city.
考古学家在古城的内克罗波利斯中发现了文物。
B2 adjective /ˈnoʊtɪsəbl/

noticeable

显著的
Meaning
Easily seen, observed, or recognized.
Example
There was a noticeable improvement in her performance.
她的表现有了显著的改善。
C1 noun /nɪərˈvɑːnə/

nirvana

Meaning
A state of perfect happiness, peace, and freedom from suffering; in Buddhism, the ultimate goal of liberation.
Example
Meditation helps some people seek nirvana in their lives.
A1 adverb /noʊ/

no

不
Meaning
used to give a negative response or to show disagreement
Example
She said no to the invitation.
她对邀请说了不。
C2 verb /ˌnɒnˈplʌst/

nonplussed

困惑
Meaning
Past tense of nonplus; surprised and unsure how to react.
Example
He stood nonplussed at the strange remark.
他对奇怪的评论感到困惑。
C2 noun /nɪb/

nib

钢笔尖
Meaning
the pointed end of a pen used for writing or drawing
Example
He dipped the nib into the ink before writing.
他在写字之前把钢笔尖浸入墨水中。
C2 noun /naɪt kwiːn/

Night queen

夜来香
Meaning
a fragrant white flower that blooms at night and releases strong sweet scent
Example
The night queen flowers filled the garden with their sweet fragrance.
夜来香花让花园充满了甜美的香气。
C1 verb /ˈnɔːrməlaɪz/

normalize

正常化
Meaning
to bring something back to a normal or standard condition; to make something conform to a standard
Example
The government took steps to normalize relations with neighboring countries.
政府采取措施使与邻国的关系正常化。
C2 noun /ˌnɛɡlɪˈʒeɪ/

negligee

轻薄丝绸睡衣
Meaning
A woman's light dressing gown, often made of thin or silky material.
Example
She wore a silk negligee before going to bed.
她在睡觉前穿上了丝绸睡衣。
A2 noun (plural) /ˈnuːdəlz/

noodles

面条
Meaning
long, thin strips of dough made from flour, water, or eggs, cooked and eaten as food
Example
She cooked noodles with vegetables for dinner.
她做了蔬菜面条当晚餐。
B2 verb /nɒd/

nod

点头
Meaning
to move one's head down and up to show agreement or acknowledgment
Example
She nodded in agreement with the proposal.
她点头表示同意该提议。
C2 adjective /nɪˈfɛəriəs/

nefarious

邪恶的，犯罪的，或道德上糟糕的
Meaning
Wicked, criminal, or morally bad.
Example
The police uncovered a nefarious plot to cheat investors.
警方揭露了一个邪恶的阴谋，试图欺骗投资者。
B2 adjective /ˈnoʊtəbl/

notable

显著
Meaning
worthy of attention or notice; remarkable
Example
She made a notable contribution to the project.
她对这个项目做出了显著的贡献。
C2 adjective /ˈnʌpʃəl/

nuptial

婚礼的
Meaning
Relating to marriage or weddings.
Example
The couple prepared for their nuptial ceremony with great joy.
这对夫妇满怀喜悦地准备他们的婚礼仪式。
C2 noun /nɪˈkrɒlədʒi/

necrology

讣告
Meaning
An obituary notice or a list of people who have recently died.
Example
The newspaper published a necrology of notable figures who passed away that year.
报纸发布了该年已故知名人物的讣告。
A2 adverb /ˈnaʊədeɪz/

nowadays

如今
Meaning
At the present time; in contrast with the past.
Example
Nowadays, many people prefer shopping online.
如今，许多人更喜欢在线购物。
B2 adjective /naɪˈiːv/

naive

天真
Meaning
Having a lack of experience or sophistication; overly innocent or trusting.
Example
She was naive to believe the scammer’s story.
她天真地相信了骗子的故事。
A2 verb /noʊt/

note

记录
Meaning
to write down or observe something; to pay attention to
Example
Please note the important points during the lecture.
请在讲座中注意重要的要点。
C1 noun /noʊz rɪŋ/

Nose ring

鼻环
Meaning
a piece of jewelry worn through a piercing in the nose
Example
She got a small gold nose ring for her birthday.
她在生日时收到了一个小巧的金鼻环。
C1 noun /njʊəˈrəʊ.sɪs/

neurosis

神经症
Meaning
A relatively mild mental illness that is not caused by organic disease, involving symptoms of stress.
Example
His neurosis made social interactions difficult.
他的神经症使得社交互动变得困难。
C2 verb /ˈnɪtˌpɪk/

nitpick

Meaning
To find and criticize small or unimportant faults in someone or something.
Example
She tends to nitpick about every little detail.
B2 noun /ˈnuː.kʌm.ər/

New-comer

新来者
Meaning
a person who has recently arrived in a place or joined a group
Example
The newcomer was warmly welcomed by the team.
新来者受到了团队的热烈欢迎。
C2 noun /ˈnɛkrəˌmænsi/

necromancy

死灵法
Meaning
the practice of communicating with the dead, often to predict the future
Example
Ancient texts described rituals of necromancy performed by priests.
古代的文献描述了由祭司执行的死灵法仪式。
C1 noun /ˈnoʊ.və/

Nova

新星
Meaning
a star that suddenly increases greatly in brightness
Example
Astronomers discovered a new nova in the constellation.
天文学家在星座中发现了一个新的诺瓦。
A1 adjective /naɪs/

Nice

愉快的; 漂亮的; 满意的; 吸引人的
Meaning
pleasant; agreeable; satisfactory; good; attractive
Example
She wore a nice dress to the party.
她穿着一件漂亮的裙子去参加派对。
C1 adjective /ˈneɡ.lɪ.dʒənt/

Negligent

疏忽的
Meaning
failing to take proper care; careless; showing lack of attention
Example
The negligent driver caused a serious accident.
疏忽的司机造成了一起严重的事故。
A2 adjective /ˈnætʃərəl/

natural

自然的
Meaning
existing in or derived from nature; not made or caused by humankind
Example
She prefers to use natural ingredients in her cooking.
她更喜欢在烹饪中使用天然的食材。
C1 adjective /ˈnɔːʃəs/

nauseous

感觉恶心
Meaning
feeling like you are about to vomit; causing a feeling of sickness
Example
The smell of rotten food made her feel nauseous.
腐烂食物的气味让她感到恶心。
C1 noun /niːʃ/

Niche

市场细分, 专门领域, 目标市场
Meaning
A specialized segment of the market for a particular kind of product or service.
Example
Finding the right niche is key to a successful business.
找到正确的细分市场是成功经营的关键。
B2 noun /nɒsˈtæl.dʒə/

nostalgia

怀旧
Meaning
A sentimental longing for the past, typically for a period or place with happy personal associations.
Example
Listening to old songs fills me with nostalgia.
听老歌让我充满怀旧之情。
C2 verb /ˈnuːkliˌeɪt/

nucleate

成核
Meaning
to form into a nucleus or bring together into a central part
Example
The droplets began to nucleate around tiny particles in the air.
水滴开始在空气中的微小颗粒周围形成核。
C1 noun /nɑːtʃ/

notch

刻痕
Meaning
A small cut or groove on the edge or surface of something; a level or degree of achievement.
Example
He carved a notch on the stick to mark the days.
他在棍子上刻了一个刻痕，以标记天数。
C1 adjective /ˌniːoʊˈlɪθɪk/

neolithic

新石器时代的
Meaning
Relating to the later part of the Stone Age, when ground or polished stone weapons and tools prevailed.
Example
Neolithic communities began practicing agriculture and domesticating animals.
新石器时代的社区开始从事农业和驯化动物。
B2 noun ˈnætʃərəl ˈhæbɪtæt

Natural Habitat

自然栖息地
Meaning
The natural environment where organisms live and fulfill their life needs.
Example
Protecting the natural habitat is crucial for butterflies.
保护自然栖息地对蝴蝶至关重要。
C1 verb /ˈnʌrɪʃ/

nourish

滋养
Meaning
To provide with food or other substances necessary for growth, health, and good condition
Example
Good books nourish the mind.
好书滋养心灵。
C1 noun ˈnuːkliəs

nucleus

原子核
Meaning
The central core of an atom containing protons and neutrons.
Example
The nucleus consists of protons.
原子核由质子组成。
C1 adjective /ˌnɒnˈvɜː.bəl/

non-verbal

不涉及或使用语言或演讲; 通过手势、肢体语言或面部表情进行交流。
Meaning
Not involving or using words or speech; communicated through gestures, body language, or facial expressions.
Example
Non-verbal cues are just as important as words.
非语言提示与言语同样重要。
C1 noun /noʊˈbɪl.ə.ti/

Nobility

贵族; 高级身份
Meaning
the quality of being noble in character; people of noble rank
Example
He showed great nobility in forgiving his enemies.
他通过原谅敌人展现了伟大的贵族精神。
C2 noun /nɛˈkroʊsɪs/

necrosis

坏死
Meaning
the death of body tissue due to disease, injury, or lack of blood supply
Example
The doctor explained that the patient’s wound showed signs of necrosis.
医生解释说，病人的伤口显示出坏死的迹象。