narrow down
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idiom

narrow down

将选项列表缩小到更小的数字
Meaning
to reduce a list of options to a smaller number
Example
We’ve **narrowed down** the candidates to the final three.
我们已将候选人名单缩小到最后三个。
idiom

nod off

突然睡着，特别是坐着的时候
Meaning
to fall asleep suddenly, especially when sitting
Example
He **nodded off** during the boring lecture.
他在无聊的讲座中睡着了。
idiom

nip it in the bud

在问题变得更糟之前阻止它
Meaning
to stop a problem before it gets worse
Example
We should **nip it in the bud** before it becomes serious.
我们应该在事情变得严重之前阻止它。
idiom

navigate uncharted waters

处理一个新的和未知的情况。
Meaning
Deal with a situation that is new and unknown.
Example
Starting this business means **navigating uncharted waters**.
开始这个业务意味着**导航未知水域**。
idiom

nip in the bud

在问题变得更严重之前停止它
Meaning
to stop something before it becomes a bigger problem
Example
We should **nip the problem in the bud** before it spreads.
我们应该在问题扩散之前**把问题扼杀在萌芽状态**。
idiom

no strings attached

没有特殊条件或限制
Meaning
with no special conditions or restrictions
Example
They offered me a free trial with **no strings attached**.
他们为我提供了一个免费试用，没有**no strings attached**
idiom

Never give up

尽管面临困难，仍然继续努力。
Meaning
Always continue trying despite difficulties.
Example
No matter how hard it is, **never give up**.
无论多么困难，**永不放弃**。
idiom

Nosey parker

一个过于关心他人事情的人。
Meaning
Someone who is too interested in other people's business.
Example
Stop being a **nosey parker** and mind your own business!
停止做个**nóu zī pà kè**，专心管好自己的事！
idiom

neural spark

人工智能创新中的突发洞察力或创造力时刻
Meaning
a sudden moment of insight or creativity in AI innovation
Example
Her idea was a true **neural spark** that changed the whole project.
她的想法是一个真正的**neural spark**，改变了整个项目。
idiom

No doubt about it

用来表示完全同意
Meaning
Used to express complete agreement
Example
**No doubt about it**, she deserves the award.
毫无疑问，她值得这个奖。
idiom

new lease on life

在困难时期之后重新开始生活或做某事的机会
Meaning
a chance to live or start something again after a period of difficulty
Example
Winning the award gave her a **new lease on life**.
获奖给了她生活的新机会。
idiom

narrow down to

将选择范围缩小到更少的数量
Meaning
to reduce choices to a smaller number
Example
We’ve **narrowed it down to** three finalists.
我们已经把范围缩小到三位决赛选手。
idiom

nail down

使某事确定或明确
Meaning
to make something definite or certain
Example
We need to **nail down** the details before signing the contract.
在签合同之前，我们需要确定细节。
idiom

neural network

一系列算法，尝试在数据集中识别潜在的关系。
Meaning
A series of algorithms that attempt to recognize underlying relationships in a set of data.
Example
The AI system was built using a **neural network** to recognize patterns.
该AI系统是使用**神经网络**来识别模式构建的。
idiom

nurture talent

帮助某人的技能和能力成长与发展
Meaning
to help someone's skills and abilities grow and develop
Example
A great mentor knows how to **nurture talent** and help their mentees grow.
一个伟大的导师知道如何**培育人才**并帮助他们的学员成长。
idiom

new blood

新的人带来新鲜的想法
Meaning
new people who bring fresh ideas
Example
The company needs **new blood** to stay competitive.
公司需要**新的人**来保持竞争力。
idiom

neck and neck

在比赛或竞争中非常接近
Meaning
very close in a race or competition
Example
The two runners were **neck and neck** until the final lap.
两名跑步者直到最后一圈都**不分上下**。
idiom

no rocket scientist

不太聪明；不是天才
Meaning
not very intelligent; not a genius
Example
He’s **no rocket scientist**, but he works hard.
他不是**天才**，但是他努力工作。
idiom

narrow in

集中在更小的区域或一组选项上
Meaning
to focus on a smaller area or set of options
Example
Let’s **narrow in** on the two strongest proposals.
让我们集中在两个最强的提案上。
idiom

Never say die

始终保持乐观和坚定的态度。
Meaning
Always remain optimistic and determined.
Example
He faced many challenges but had a **never say die** attitude.
他面临了许多挑战，但保持着**永不言弃**的态度。
idiom

not the sharpest tool in the shed

不是很聪明
Meaning
not very intelligent
Example
He’s kind but **not the sharpest tool in the shed**.
他很友好，但**不是最聪明的**。
idiom

nose around

以好奇的方式寻找信息
Meaning
to search for information in a curious way
Example
Reporters began to **nose around** after the leak.
记者在泄漏后开始以好奇的方式寻找信息。
idiom

nice to meet you

一种在第一次见面时使用的礼貌表达
Meaning
a polite expression used when meeting someone for the first time
Example
It's **nice to meet you**, I've heard a lot about you.
很高兴见到你，我听说过很多关于你的事情。
idiom

no pain, no gain

没有痛苦就没有收获
Meaning
you have to work hard to achieve success
Example
He practices every day because he believes **no pain, no gain**.
他每天都在练习，因为他相信 **no pain, no gain**。
idiom

No man is an island

人们需要他人来提供支持和连接。
Meaning
People need others for support and connection.
Example
We all need help sometimes because **no man is an island**.
我们有时需要帮助，因为 **no man is an island**。
idiom

no worries

用来表示一切都很好或没有问题
Meaning
used to say that everything is fine or there is no problem
Example
**No worries**, I’ll take care of it.
别担心，我来处理。
idiom

new kid on the block

某个地方或情况中的新人
Meaning
someone new to a place or situation
Example
He’s the **new kid on the block** in the company.
他是公司里的新人。
idiom

no such luck

当期望的事情没有发生时使用
Meaning
used when something hoped for did not happen
Example
I hoped to win the lottery, but **no such luck**.
我希望赢得彩票，但**no such luck**。
idiom

neural network of ideas

思想或概念的复杂且相互连接的网络
Meaning
a complex and interconnected web of thoughts or concepts
Example
Her brain works like a **neural network of ideas**.
她的大脑就像一个**神经网络的想法**。
idiom

Nothing ventured, nothing gained

如果你不冒险，你什么都得不到
Meaning
you can’t achieve anything if you don’t take risks
Example
He decided to invest because **nothing ventured, nothing gained**.
他决定投资，因为**什么都不冒险，什么都得不到**
idiom

No comment

拒绝回答问题
Meaning
Refusing to answer a question
Example
The spokesperson simply said **no comment** to all questions.
发言人对所有问题都说了‘没有评论’。
idiom

nose for news

一种寻找有趣故事的直觉
Meaning
an instinct for finding interesting stories
Example
Good reporters have a natural **nose for news**.
好的记者天生有一种新闻直觉。
idiom

not born yesterday

不容易上当; 有经验且聪明
Meaning
not easily fooled; experienced and smart
Example
Don’t try to trick me — I was **not born yesterday**.
别想骗我——我**不是昨天出生的**。
idiom

nuts and bolts

某事的基本实际细节
Meaning
the basic practical details of something
Example
Let's focus on the **nuts and bolts** of this new project.
让我们专注于这个新项目的 **nuts and bolts**。
idiom

No risk, no reward

你不能指望在不冒险的情况下取得成就。
Meaning
You can't expect to achieve something without taking risks.
Example
To get ahead in life, you have to understand that **no risk, no reward**.
为了在人生中前进，你必须理解**没有风险，没有回报**。
idiom

not lose heart

不要失去信心或勇气
Meaning
to not lose confidence or courage
Example
**Don’t lose heart**; success takes time.
不要失去信心；成功需要时间
idiom

nudge into

轻轻地鼓励某人做某事
Meaning
to gently encourage someone toward something
Example
They **nudged her into** presenting at the meetup.
他们轻推她在聚会上做演讲。
idiom

Nest feathering

利用自己的地位或权力谋取个人经济利益。
Meaning
Using one’s position or power for personal financial gain.
Example
The politician was accused of **nest feathering**.
那位政客被指控利用职权谋取私利。
idiom

note down

记下来以便记住
Meaning
to write something so you remember it
Example
Please **note down** the action items before we leave.
请在离开之前**记下**这些行动项目。
idiom

never say never

鼓励某人保持希望并且不放弃
Meaning
to encourage someone to stay hopeful and not give up
Example
**Never say never**—you might succeed next time.
**永不放弃**—你下次可能会成功。
idiom

nest egg

为未来储存的钱
Meaning
money saved for the future
Example
They’ve built a small **nest egg** for their retirement.
他们为退休建立了一个小小的 **储蓄**。
idiom

never look back

专注于向前走，而不是停留在过去的错误上
Meaning
to focus on moving forward and not dwell on past mistakes
Example
Once she made the decision, she promised to **never look back**.
一旦她做出决定，她承诺**不回头**。
idiom

Nero fiddled while Rome burned

在危机或严重情况下做无关紧要的事情。
Meaning
To ignore a crisis or serious situation while doing something trivial.
Example
The leader was accused of **fiddling while Rome burned** during the economic collapse.
领导人在经济崩溃期间被指控在罗马燃烧时还在拉小提琴。
idiom

nod in agreement

通过点头表示同意
Meaning
to show agreement by nodding
Example
Everyone **nodded in agreement** when the plan was explained.
当计划被解释时，每个人都点头表示同意。
idiom

not my cup of tea

不是某人喜欢或享受的事情
Meaning
not something one likes or enjoys
Example
Watching cricket is **not my cup of tea**.
看板球不是我的兴趣。
idiom

nitpick

在某事中挑剔小的、不重要的错误
Meaning
to find small, unimportant faults in something
Example
Stop **nitpicking** every little mistake I make!
别再对我犯的每个小错误吹毛求疵了！
idiom

new lease of life

给某人或某物一个新的开始或新的能量
Meaning
to give someone or something a fresh start or new energy
Example
The renovation of the old building has given it a **new lease of life**.
这座老建筑的翻新赋予了它**新的生命力**。
idiom

news travels fast

信息传播迅速
Meaning
information spreads quickly
Example
In small towns, **news travels fast**.
在小镇上，**新闻传播迅速**。
idiom

nothing to write home about

没有什么特别或有趣的
Meaning
not special or interesting
Example
The movie was **nothing to write home about**.
这部电影没什么特别的。
idiom

nose to the grindstone

专注并长期努力工作
Meaning
to focus and work hard for a long time
Example
He kept his **nose to the grindstone** and got promoted.
他专心工作并得到了晋升。
idiom

natural language processing

一个人工智能领域，专注于计算机与人类语言之间的互动
Meaning
a field of AI that focuses on the interaction between computers and human language
Example
Natural language processing enables AI systems to understand and respond to human speech.
自然语言处理使AI系统能够理解并回应人类语言。
idiom

No guts, no glory

没有勇气，你无法取得成功。
Meaning
Without courage, you can’t achieve success.
Example
He took the challenge—**no guts, no glory**.
他接受了挑战—**没有勇气，便没有荣耀。**