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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。
C1 noun /ˈnɛktəriːn/

nectarine

油桃 (一种光滑皮肤的桃子品种)
Meaning
A smooth-skinned variety of peach.
Example
She bought a basket of fresh nectarines from the market.
她从市场上买了一篮子新鲜的油桃。
B1 adverb /ˈnjuːli/

newly

最近
Meaning
in a new or recent manner
Example
She has newly renovated her house.
她最近重新装修了她的房子。
A2 adjective /ˈnæʃənəl/

national

国家的
Meaning
relating to a nation, especially its culture, language, or government
Example
The national anthem was played at the ceremony.
国歌在仪式上播放。
C1 verb /ˈnɛsəl/

nestle

依偎
Meaning
to settle or lie comfortably within or against something
Example
The child nestled into her mother's arms.
孩子依偎在她母亲的怀里。
C2 noun /ˌnɒvəˈlɛt/

novellette

短篇小说
Meaning
A short novel or long short story.
Example
The author published a novellette as a preview of her upcoming series.
作者作为她即将发布的系列的预览，发布了一个短篇小说。
B2 adjective /ˈnuːkliər/

nuclear

核能
Meaning
relating to the nucleus of an atom or to nuclear energy
Example
The country is developing nuclear energy.
该国正在开发核能。
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。
A2 adjective /ˈnæsti/

nasty

令人不快的
Meaning
very unpleasant, unkind, or offensive
Example
He made a nasty comment about her dress.
他对她的裙子发表了令人不快的评论。
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。
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。
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。
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。
A2 adjective /ˈnɪəˌbaɪ/

nearby

附近
Meaning
close to a particular place or person
Example
The nearest gas station is nearby.
最近的加油站就在附近。
C2 adjective /ˌnɒnˈtrɪviəl/

nontrivial

非平凡
Meaning
Not simple or easy; requiring effort or significant thought.
Example
Solving the equation turned out to be a nontrivial task.
解决方程被证明是一个非平凡的任务。
C1 noun /noʊˈteɪʃən/

notation

符号系统
Meaning
A system of symbols or signs used to represent information, especially in mathematics or music.
Example
The teacher explained the notation used in the algebra equations.
老师解释了代数方程中使用的符号系统。
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。
A1 pronoun /ˈnʌθɪŋ/

nothing

什么都没有
Meaning
not anything; no thing
Example
She has nothing to worry about.
她没有什么可担心的。
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。
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。
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。
C1 noun /nuːs/

Noose

套索
Meaning
a loop with a running knot used for hanging; a trap or snare
Example
The cowboy made a noose to catch the wild horse.
牛仔做了一个套索来抓住野马。
C2 noun /nɑnˈen.tə.ti/

Nonentity

无足轻重的人; 不存在的事物
Meaning
a person of no importance or influence; something that does not exist
Example
He felt like a nonentity in the large corporation.
他在大公司里感觉自己像个无足轻重的人。
B2 adverb /ˈnoʊtəbli/

notably

显著地
Meaning
used to indicate something worthy of attention or significant
Example
She is notably talented in painting.
她在绘画方面非常有才华。
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。
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。
C2 adjective /ˈneb.jə.ləs/

Nebulous

模糊的; 不明确的; 朦胧的
Meaning
vague or unclear; lacking definite form; hazy
Example
His plans for the future remain nebulous and unclear.
他的未来计划仍然模糊不清。
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。
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。
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 adjective /ˌnɒndɪˈskrɪpt/

nondescript

无特色
Meaning
Lacking distinctive or interesting features; dull and unremarkable.
Example
He lives in a nondescript apartment building on the edge of town.
他住在市区边缘的一座无特色的公寓楼里。
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。
C2 noun /nɑːrˈsɪsəs/

narcissus

水仙花
Meaning
A type of flowering plant with yellow or white blooms, often associated with self-love from Greek mythology.
Example
A narcissus bloomed in the garden during spring.
春天时，一朵水仙花在花园里盛开。
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。
C1 verb /nɪp/

nip

轻咬
Meaning
to pinch or bite lightly; to move quickly
Example
The cold wind nipped at my face.
冷风轻咬着我的脸。
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。
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 noun /ˈnjuːtrɪənt dɪˈfɪʃənsi/

nutrient deficiency

营养不足
Meaning
A lack of essential nutrients required for healthy plant growth, which can result in poor crop development, reduced yields, and increased susceptibility to diseases.
Example
Nutrient deficiency in the soil can reduce crop productivity.
土壤中的营养不足会降低作物的生产力。
C2 noun /ˈneɪˌseɪ.ɪŋ/

naysaying

负面言论
Meaning
The act of expressing negative or pessimistic views.
Example
His constant naysaying discouraged the team.
他不断的负面言论使团队失去了动力。
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 /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。
A2 adjective /ˈnɔː.məl/

Normal

正常; 典型; 符合标准; 健康
Meaning
usual; typical; conforming to a standard; healthy
Example
It's normal to feel nervous before an important exam.
在重要的考试前感到紧张是正常的。
B2 noun /ˌnoʊtɪfɪˈkeɪʃənz/

notifications

通知
Meaning
A notice or announcement, especially an official one.
Example
Turn off notifications to stay focused.
关闭通知以保持专注。
C2 noun /niːˈɒlədʒɪzəm/

neologism

新词
Meaning
A newly coined word or expression.
Example
The internet has given rise to many neologisms like 'selfie' and 'hashtag'.
互联网催生了许多新词，如“自拍”和“标签”。
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。
C1 noun /ˈnɔːrmən/

Norman

Meaning
A member of a people of mixed Scandinavian and Frankish origin who settled in Normandy, or relating to their culture.
Example
The Normans conquered England in 1066.
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。
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 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。
C1 noun /nɔːrm/

Norm

标准; 常规; 规则; 传统
Meaning
a standard of behavior; what is typical or expected
Example
Working late has become the norm in this company.
加班已成为这家公司的一项常规。
B2 noun /ˈnæʃənəl ˈænθəm/

national anthem

国歌
Meaning
an official patriotic song of a country, performed at national events and ceremonies
Example
The national anthem was played before the international match.
国际比赛前演奏了国歌。
C1 noun /ˈnek.səs/

Nexus

联系; 纽带;
Meaning
a connection or series of connections linking two or more things
Example
There's a clear nexus between education and economic development.
教育与经济发展的之间有一个清晰的纽带。
C1 adjective /ˈnæs.ənt/

nascent

初生的
Meaning
Emerging, developing, or in the early stages of formation
Example
The nascent technology is revolutionizing industries.
初生的技术正在革命化各行各业。
B2 adjective /ˈnoʊ.bəl/

Noble

高尚的；贵族的
Meaning
having high moral qualities; honorable; generous; of aristocratic birth
Example
His noble actions helped many people in need.
他的高尚行为帮助了许多需要帮助的人。
B2 noun, verb /nɜːrv/

nerve

神经; 勇气
Meaning
A bundle of fibers in the body that transmits signals between the brain and other parts; also courage or audacity.
Example
She gathered the nerve to speak in front of the large audience.
她鼓起勇气在大观众面前发言。
B2 noun /ˈnæreɪtər/

narrator

叙述者
Meaning
A person who tells the story in a book, play, or film.
Example
The narrator guided the audience through the complex plot.
叙述者引导观众穿越复杂的情节。
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, 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。
B2 noun /ˈnuː.səns/

Nuisance

麻烦; 打扰;
Meaning
a person, thing, or circumstance causing inconvenience or annoyance
Example
The constant noise from construction is a real nuisance.
建筑施工的持续噪音是一种真正的麻烦。
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。
A2 noun /ˈnefjuː/

nephew

侄子
Meaning
the son of one’s brother or sister
Example
My nephew is studying at the university.
我的侄子在大学学习。
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。
B2 noun ˈnɒv.əl.ti

novelty

新颖
Meaning
The quality of being new, original, or unusual; a new or unfamiliar thing or experience.
Example
The novelty of the invention attracted investors.
发明的新颖性吸引了投资者。
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。
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。
C1 noun /ˈnjʊə.rəʊ.trænsˌmɪt.ərs/

neurotransmitters

神经传导物质
Meaning
Chemical messengers that transmit signals across nerve synapses, affecting mood, behavior, and cognitive functions.
Example
Serotonin and dopamine are key neurotransmitters affecting mood.
血清素和多巴胺是影响情绪的关键神经传导物质。
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。
B2 adverb /ˈnæʃənəli/

nationally

在全国范围内
Meaning
at the level of a whole nation; in a way that involves or affects an entire country
Example
The policy was implemented nationally to ensure equal benefits for all citizens.
该政策在全国范围内实施，以确保所有公民享有平等的福利。
C1 noun /ˈnɔːrməlsi/

normalcy

正常
Meaning
The condition of being normal; a return to usual or expected conditions.
Example
After the flood, the town struggled to regain a sense of normalcy.
洪水过后，城镇努力恢复正常状态。
B2 adjective, verb /ˈnoʊtɪd/

noted

著名
Meaning
well known or famous; written down or observed
Example
He is a noted author in the field of history.
他是历史领域的著名作家。
C2 adjective /ˌnjuːmɪzˈmætɪk/

numismatic

钱币学的
Meaning
relating to the study or collection of coins, currency, and medals
Example
He has a numismatic collection of rare coins from around the world.
他拥有来自世界各地的稀有硬币收藏。
C1 adjective /ˈnæv.ɪ.ɡə.bəl/

Navigable

可航行的
Meaning
suitable for ships or boats to travel on; able to be navigated
Example
The river is navigable for small boats during the rainy season.
这条河在雨季适合小船通行。
C1 adjective /nəʊˈmæd.ɪk/

nomadic

游牧
Meaning
Living the life of a nomad; wandering from place to place without a fixed home.
Example
The tribe led a nomadic lifestyle.
部落过着游牧生活。
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。
B1 adjective /ˈneɪtɪv/

native

本地的
Meaning
Belonging to a person by birth; originating in a particular place.
Example
He is a native speaker of Bengali.
他是孟加拉语的母语者。
C2 adjective /ˈnɛtlˌsʌm/

nettlesome

令人烦恼的
Meaning
Causing irritation, annoyance, or difficulty.
Example
The nettlesome rules frustrated the workers.
令人烦恼的规则让工人们感到沮丧。
B2 noun /næˈreɪʃən/

narration

叙述
Meaning
The act of telling a story or describing events in detail.
Example
The movie’s narration was done by a famous actor.
电影的叙述由一位著名演员完成。
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.
C2 noun /ˌniːoʊˈdɑːrwɪnɪzəm/

neo-darwinism

新达尔文主义
Meaning
A modern interpretation of Darwin's theory of evolution, integrating genetics and natural selection.
Example
Neo-Darwinism combines Darwin’s theory of natural selection with modern genetics.
新达尔文主义将达尔文的自然选择理论与现代遗传学相结合。
B2 noun /ˈnjuːzˌlɛtər/

newsletter

时事通讯
Meaning
a printed or electronic report containing news or information about a company or organization
Example
The company sends a weekly newsletter to its employees.
公司每周向员工发送时事通讯。
C1 noun /ˈnɑːrsɪsɪst/

narcissist

自恋者
Meaning
A person who has an excessive interest in or admiration of themselves.
Example
Everyone avoided him because he was a narcissist.
每个人都避开他，因为他是一个自恋者。
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。
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.
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。
C2 noun /neɪv/

nave

教堂的中央部分
Meaning
the central part of a church building intended to accommodate the congregation
Example
The choir sang beautifully in the church nave.
合唱团在教堂的内夫里唱得非常动听。
A2 noun /ˈnek.ləs/

Necklace

项链
Meaning
a piece of jewelry that is worn around the neck
Example
She wore a beautiful diamond necklace to the party.
她在派对上戴着一条漂亮的钻石项链。
C2 noun /naɪˈdʒel.ə/

Nigella

黑孜然
Meaning
small black seeds with a nutty, slightly bitter flavor, also known as black cumin or black seed
Example
Sprinkle nigella seeds on top of the bread before baking.
在面包上撒上黑孜然种子，然后烤制。
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 adjective /ˈniːd.ləs/

Needless

不必要的
Meaning
unnecessary; not required; without purpose
Example
The argument was needless and could have been avoided.
这场争论是多余的，本来可以避免。
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。
C2 noun /ˈnɛkrəˌmænsər/

necromancer

Meaning
a person who practices necromancy; a wizard or magician who claims to communicate with the dead
Example
The villagers feared the old necromancer who lived at the edge of the forest.
A2 noun /ˈneɪ.bər/

Neighbour

邻居; 旁边
Meaning
a person who lives near or next to another person
Example
My neighbour is very friendly and helpful.
我的邻居非常友好且乐于助人。
A2 noun /ˈnjuːzˌpeɪpər/

newspaper

报纸
Meaning
a printed publication (usually daily or weekly) containing news, articles, advertisements, and correspondence
Example
I read the newspaper every morning.
我每天早上读报纸。
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。
B2 adjective /ˈneɪ.kɪd/

Naked

赤裸的; 没有衣服; 暴露的; 裸露的
Meaning
without clothes or covering; bare; exposed; unclothed
Example
The naked truth about the situation shocked everyone.
关于局势的赤裸真相震惊了所有人。
C1 noun ˌnæʃ.ən.ə.laɪˈzeɪ.ʃən

nationalization

国有化
Meaning
The process of a government taking control of private property or industry.
Example
The nationalization of banks was aimed at stabilizing the economy.
银行的国有化旨在稳定经济。
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。
A1 noun /noʊz/

nose

鼻子
Meaning
the part of the face that contains the nostrils and is used for breathing and smelling
Example
He has a sharp nose and can smell things from far away.
他有一只尖锐的鼻子，可以从远处闻到东西。
B1 noun /ˈneɪʃən/

nation

国家
Meaning
a large group of people united by common descent, history, culture, or language
Example
The nation celebrated its independence day with pride.
国家以自豪的心情庆祝独立日。
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。
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。
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 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。
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。
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 /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。
C2 noun /njʊˈrældʒə/

neuralgia

神经痛
Meaning
intense, often intermittent pain along a nerve pathway
Example
The patient suffers from neuralgia in her face.
病人面部患有神经痛。
C2 noun /ˈnjuː.trɪ.mənt/

nutriment

营养物
Meaning
Something that nourishes; sustenance or food.
Example
The soil provides nutriment to the plants.
土壤为植物提供养分。
C1 noun /ˈnɒs.trɪl/

Nostril

鼻孔
Meaning
either of the two openings in the nose through which air passes
Example
The doctor checked each nostril for any blockage.
医生检查了每个鼻孔，寻找任何阻塞物。
B2 noun /ˌnəʊtɪfɪˈkeɪʃən/

notification

通知
Meaning
an official or formal notice or message informing someone of something; an alert delivered by a system or device
Example
You will receive a notification when your application is approved.
当你的申请被批准时，你会收到通知。
C2 noun, adjective /nɒn ˈkɒmbətənt/

non-combatant

非战斗人员
Meaning
a person not engaged in fighting during a war, such as civilians or medical staff
Example
The Red Cross workers were treated as non-combatants in the conflict.
红十字会的工作人员在冲突中被视为非战斗人员。
C1 adjective /ˈnjuː.tri.ənt dɛns/

nutrient-dense

营养丰富
Meaning
Rich in nutrients and high nutritional value.
Example
Organic food is often more nutrient-dense than processed food.
有机食品通常比加工食品更富含营养。
C1 noun /naɪˈiːvteɪ/

naivete

Meaning
The quality of being naive; lack of experience, wisdom, or judgment.
Example
His naivete made him an easy target for manipulation.
C1 noun /ˈnʌr.ɪʃ.mənt/

nourishment

营养
Meaning
Food and nutrients necessary for the body's growth and development.
Example
Proper nourishment is essential for child development.
适当的营养对儿童的发展至关重要。
C1 adjective /ˈneɪm.ləs/

Nameless

无名的; 匿名的; 不知名的; 未识别的
Meaning
having no name; anonymous; unknown; unidentified
Example
The nameless fear haunted him throughout the night.
无名的恐惧整晚困扰着他。
C1 adjective /ˈnɒnʃələnt/

nonchalant

Meaning
Appearing calm, casual, and unconcerned.
Example
He gave a nonchalant shrug and walked away.
B1 noun /ˈnɜːrsəri/

nursery

托儿所
Meaning
a room or place where young children are cared for
Example
She works in a nursery, taking care of infants.
她在托儿所工作，照顾婴儿。
B1 noun /neɪl/

Nail

钉子
Meaning
a small metal spike with a broadened flat head; part of finger or toe
Example
He hammered the nail into the wooden board.
他把钉子钉进了木板。
B2 noun, adjective, adverb /ˌnɔːrθˈwest/

northwest

西北
Meaning
the direction that is between north and west; situated in or moving toward this direction
Example
Seattle is located in the northwest of the United States.
西雅图位于美国的西北部。
C2 noun /ˈnɑːstrəm/

nostrum

无效的药物
Meaning
a medicine or remedy, especially one that is not considered effective; a questionable solution
Example
The politician’s plan was dismissed as a mere nostrum for a complex problem.
政治家的计划被视为一个复杂问题的简单无效药物。
B1 noun /ˈnætʃərəl dɪˈzæstər/

natural disaster

自然灾害
Meaning
a catastrophic event caused by natural processes of the Earth that results in significant damage, destruction, or loss of life
Example
The coastal town was devastated by a natural disaster.
这座沿海城镇被一场自然灾害摧毁了。