smudge
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C1 noun/verb /smʌdʒ/

smudge

污点，脏污的印记
Meaning
a dirty mark or smear; to make something dirty or unclear by rubbing or touching
Example
She accidentally smudged her lipstick on the napkin.
她不小心把口红弄到餐巾纸上了。
C1 noun /stɪˈlɛtoʊ/

stiletto

细高跟鞋 / 匕首
Meaning
A small, thin, high-heeled shoe or a dagger with a slender blade.
Example
She wore elegant stiletto heels to the party.
她穿着优雅的细高跟鞋去参加派对。
C1 noun /ʃruː/

shrew

暴躁的女人 / 小鼠类动物
Meaning
a small mouse-like animal; also a woman with a bad temper
Example
The play describes a strong-willed woman as a shrew.
这部戏描述了一位坚强的女性，像一个暴躁的女人一样。
C1 noun /ˈskaʊndrəl/

scoundrel

无赖
Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
那个无赖骗取了老人家的积蓄。
C1 adjective /skænt/

Scant

稀少的
Meaning
barely sufficient; inadequate; small in amount
Example
There was scant evidence to support his claim.
支持他主张的证据非常少。
C1 noun /ˌsɑːrdʒənt ˈmeɪdʒər/

sergeant-major

军士长
Meaning
A senior non-commissioned officer in the army responsible for discipline and administration within a unit.
Example
The sergeant-major inspected the troops before the parade.
军士长在游行前检查了部队。
C1 noun /sɪlt/

silt

泥沙
Meaning
Fine sand, clay, or other material carried by running water and deposited as a sediment.
Example
The river deposited layers of silt along its banks.
河流在其河岸上沉积了层层的泥沙。
C1 noun /ˈsʌm.ɪt əv ðə ˈfjuː.tʃər/

Summit of the Future

未来峰会
Meaning
A high-level conference focused on addressing future challenges and opportunities.
Example
The Summit of the Future addressed global challenges.
未来峰会解决了全球性挑战。
C1 /splɪnt/

splint

夹板
Meaning
A rigid device used to support and immobilize a broken or injured body part.
Example
The doctor applied a splint to stabilize the patient's broken arm.
医生为病人的断臂稳定应用了夹板。
C1 adjective /ˌsuː.pəˈsɒn.ɪk/

Supersonic

比声音的速度更快; 与超过声音速度的速度相关
Meaning
faster than the speed of sound; relating to speeds greater than the speed of sound
Example
The supersonic jet broke the sound barrier.
超音速飞机打破了音障。
C1 verb /ˈswɪndl/

swindle

欺骗
Meaning
to cheat someone out of money or possessions by deceit
Example
The con artist tried to swindle the old man out of his savings.
骗子试图骗取老人的储蓄。
C1 adjective /ˈsʌmp.tʃu.əs/

sumptuous

奢华的
Meaning
Splendid and expensive-looking; luxurious.
Example
The guests were treated to a sumptuous banquet.
客人们被招待了一场奢华的宴会。
C1 adjective /ˈstɪndʒi/

stingy

吝啬
Meaning
unwilling to spend or give; miserly
Example
He is too stingy to buy a gift for his friend.
他太吝啬了，连给朋友买礼物都不愿意。
C1 noun /stɛlθ/

stealth

隐秘, 安静地移动
Meaning
The act of moving, doing, or achieving something quietly and secretly.
Example
The cat moved with stealth towards its prey.
猫悄悄地向它的猎物走去。
C1 noun /sɪˈsɛʃən/

secession

分裂
Meaning
The action of formally withdrawing from membership of a federation or body.
Example
The secession of the southern states led to the Civil War.
南方各州的分裂导致了内战。
C1 noun /ʃeɪl/

shale

页岩
Meaning
a fine-grained sedimentary rock that can be split into thin layers
Example
The region is rich in shale and natural gas deposits.
该地区富含页岩和天然气储备。
C1 noun, verb /slɜːr/

slur

侮辱 / 轻蔑的评论
Meaning
An insulting remark or suggestion; or to speak indistinctly.
Example
He made a slur against her character.
他对她的品格做出了侮辱性的评论。
C1 adjective /ˈstɒdʒi/

stodgy

沉闷的，老式的
Meaning
Dull, uninspired, or old-fashioned; also heavy and hard to digest when referring to food.
Example
The lecture was so stodgy that many students struggled to stay awake.
讲座太沉闷了，以至于许多学生难以保持清醒。
C1 verb /skwiːl/

squeal

尖叫
Meaning
to make a high-pitched cry; to inform on someone
Example
The children squealed with delight when they saw the surprise.
孩子们看到惊喜时高兴地尖叫。
C1 verb /ˈʃʌdər/

shudder

颤抖
Meaning
to tremble or shake suddenly, often due to fear, cold, or strong emotion
Example
She shuddered at the thought of walking alone in the dark forest.
她在想到独自走在黑暗森林中的时候不禁颤抖。
C1 noun /ˈsuːtər/

suitor

追求者
Meaning
a man who pursues a relationship with a woman, often with the intent to marry
Example
She had many suitors vying for her attention.
她有许多追求者争夺她的注意力。
C1 adjective /sɑːrˈdɒnɪk/

sardonic

幸福
Meaning
Grimly mocking or cynical.
Example
She gave him a sardonic smile after hearing his excuse.
她在收到奖项时，无法隐藏自己的幸福。
C1 noun /ˈsteɪ.ʃən.ər/

Stationer

文具商
Meaning
a person who sells paper, pens, pencils, and other office supplies
Example
The stationer recommended the best pens for writing exams.
文具商推荐了最适合考试的钢笔。
C1 noun /ˌsɛlfsəˈfɪʃənsi/

Self-sufficiency

自给自足
Meaning
the ability to supply one's own needs without external assistance; independence
Example
The farm achieved complete self-sufficiency in food production.
农场在食品生产中实现了完全的自给自足。
C1 verb /ˈslɪðər/

slither

滑行
Meaning
to move smoothly over a surface with a twisting, sliding motion, like a snake
Example
The snake slithered through the grass.
蛇穿过草地滑行。
C1 adjective /steɪd/

staid

严肃，受尊敬的
Meaning
Serious, respectable, and unadventurous.
Example
He came from a staid family background.
他来自一个严肃的家庭。
C1 noun/adjective /ˈstɜː.lɪŋ/

sterling

英国货币 / 优秀
Meaning
British money, especially pounds; of excellent quality.
Example
She was praised for her sterling work on the project.
她因在项目中的出色工作而受到表扬。
C1 noun /siˈɛrə klʌb/

Sierra Club

塞拉俱乐部
Meaning
An American environmental organization founded in 1892 by John Muir, focused on promoting conservation of the natural environment by influencing public policy decisions.
Example
John Muir founded the Sierra Club in 1892 to protect wild areas.
约翰·缪尔在1892年创立了塞拉俱乐部，以保护野生地区。
C1 noun, verb /spreɪn/

sprain

扭伤
Meaning
an injury to a joint in which the ligaments are stretched or torn
Example
She sprained her ankle while running in the park.
她在公园跑步时扭伤了脚踝。
C1 noun ˈsɪn.tæks

syntax

语法
Meaning
The arrangement of words and phrases to create well-formed sentences in a language.
Example
Programming languages follow strict syntax rules.
编程语言遵循严格的语法规则。
C1 verb /swɜːrv/

swerve

突然转向
Meaning
to change direction suddenly, especially to avoid hitting something
Example
The car swerved to avoid the dog.
汽车为了避免撞到狗而突然转向。
C1 verb /səbˈstænʃieɪt/

substantiate

证实
Meaning
To provide evidence to support or prove the truth of something.
Example
The lawyer worked to substantiate the claims with solid evidence.
律师努力通过确凿证据来证实这些主张。
C1 noun ˌsɪs.təˈmæt.ɪk ˈstræt.ə.dʒi

systematic strategy

系统策略
Meaning
A methodical and organized plan or approach to achieve specific objectives.
Example
A systematic strategy was employed to achieve objectives.
采取了系统策略来实现目标。
C1 noun /ʃoʊl/

shoal

鱼群
Meaning
a large group of fish swimming together; a shallow place in water
Example
We saw a shoal of fish near the coast.
我们在海岸附近看到了鱼群。
C1 noun /ˈsɛpərətɪst/

separatist

分裂主义者
Meaning
A person who supports the separation of a group from a larger body, often for political or cultural independence.
Example
The separatist group demanded independence from the central government.
分裂主义者要求中央政府独立。
C1 noun /ˈsʌnˌdaʊn/

sundown

日落
Meaning
the time in the evening when the sun goes below the horizon
Example
We planned to reach the village before sundown.
我们计划在日落之前到达村庄。
C1 adjective ˌsɪn.əˈdʒɪs.tɪk

synergistic

协同的
Meaning
Relating to the interaction of elements that when combined produce a greater effect than the sum of their individual effects.
Example
A synergistic effect occurs when nutrients work together.
协同效应发生在营养素共同作用时。
C1 verb /slaʊtʃ/

slouch

懒散地坐
Meaning
To stand, sit, or move in a lazy or awkward way.
Example
He slouched in the chair, looking tired.
他在椅子上懒散地坐着，看起来很累。
C1 noun /ˌspɒn.təˈneɪ.ɪ.ti/

spontaneity

自发性
Meaning
The quality of being spontaneous; natural and unplanned behavior.
Example
His spontaneity makes him a great conversationalist.
他的自发性使他成为一个很棒的对话者。
C1 adjective ˌsɪmbɪˈɒtɪk

symbiotic

共生的
Meaning
Involving interaction between two different organisms living in close physical association.
Example
The relationship between the bee and the flower is symbiotic.
蜜蜂和花朵之间的关系是共生的。
C1 verb /sərˈpæs/

surpass

超越
Meaning
to exceed or go beyond
Example
Her performance surpassed all expectations.
她的表现超出了所有预期。
C1 noun /stɛntʃ/

stench

臭味
Meaning
A very strong and unpleasant smell.
Example
The stench of garbage filled the alley.
垃圾的臭味充满了小巷。
C1 noun /ˌsʌpəˈzɪʃən/

supposition

假设
Meaning
An assumption or belief that something is true without certain proof.
Example
His plan was based on the supposition that the market would recover quickly.
他的计划是基于市场将迅速恢复的假设。
C1 verb/noun /snɑːrl/

snarl

咆哮，堵塞
Meaning
to growl aggressively with bared teeth; a tangle or mess
Example
The dog snarled at the stranger near the gate.
狗对门口的陌生人咆哮。
C1 noun /sɪˈnɒpsɪs/

synopsis

概述
Meaning
a brief summary of the main points of a text, film, or research
Example
The publisher asked the author to submit a one-page synopsis of the novel.
出版商要求作者提交小说的单页概述。
C1 noun/verb /spuːf/

spoof

幽默模仿
Meaning
A humorous imitation of something, or to trick or parody someone or something.
Example
The comedian spoofed the politician’s speech to entertain the audience.
喜剧演员模仿政治家的演讲来娱乐观众。
C1 noun, verb /ˈskʌf.əl/

scuffle

冲突
Meaning
a short, confused fight or struggle; to engage in such a fight
Example
Two players scuffled on the field after the foul.
两名球员在犯规后在场上发生了冲突。
C1 noun /ˌsɛnsəˈbɪləti/

Sensibility

感性
Meaning
the ability to appreciate and respond to complex emotional or aesthetic influences; sensitivity
Example
Her artistic sensibility made her appreciate fine details in paintings.
她的艺术感性使她能够欣赏画作中的细节。
C1 adjective ˌsʌbˈlɪm.ɪ.nəl

subliminal

低于意识阈值存在或运作，未被意识到的影响或感知
Meaning
Existing or operating below the threshold of consciousness; perceived by or affecting someone's mind without their being aware of it.
Example
Advertisements often have subliminal messages.
广告常常包含潜意识的讯息。
C1 adjective /səˈnɔːrəs/

sonorous

深沉的声音
Meaning
Deep, full, and rich in sound.
Example
The actor's sonorous voice filled the entire theater.
演员那深沉的声音充满了整个剧院。
C1 noun ˌsɪstəˈmætɪk ˈseɪvɪŋz

systematic savings

系统化储蓄
Meaning
A structured and organized approach to regularly saving money according to a planned schedule
Example
Systematic savings can mitigate financial crises in old age.
系统化储蓄可以减轻老年时期的财务危机。
C1 adjective /səˈtɪrɪk/

satiric

讽刺的
Meaning
Relating to or using satire.
Example
The novel takes a satiric view of urban life.
这部小说从讽刺的角度看待城市生活。
C1 noun /səˈvænə/

savanna

草原（散布着树木）
Meaning
a grassy plain with scattered trees, typical of tropical and subtropical regions
Example
Giraffes browsed on acacia trees across the wide savanna.
长颈鹿在广阔的萨凡纳上吃着金合欢树的叶子。
C1 adjective /ˈsɛm.ɪ.nəl/

seminal

幸福
Meaning
Strongly influencing later developments; highly original and influential.
Example
His seminal book changed the course of modern philosophy.
她在获得奖项时无法掩饰自己的幸福。
C1 adjective /ˈsæljʊˌtɛri/

salutary

有益的
Meaning
Producing good effects; beneficial, especially after something unpleasant.
Example
The accident was a salutary reminder to drive carefully.
这场事故是一个有益的提醒，要小心驾驶。
C1 noun səˈsteɪnəbəl ˈpræktɪsɪz

sustainable practices

可持续实践
Meaning
Methods and activities that can be maintained over time without depleting natural resources or harming the environment.
Example
Sustainable practices are vital for environmental preservation.
可持续实践对于环境保护至关重要。
C1 verb, noun /sæp/

sap

树液 / 削弱
Meaning
As a noun: the vital fluid in plants; As a verb: to gradually weaken or drain strength.
Example
The long journey began to sap his energy.
长途旅行开始削弱他的能量。
C1 noun /ˈspɪnstər/

spinster

未婚女性
Meaning
An unmarried woman, often one who is older and considered unlikely to marry
Example
The novel featured a kind-hearted spinster who cared for the village children.
小说中有一位心地善良的未婚女性，她照顾着村里的孩子们。
C1 noun ˈsɒv.rɪn.ti

sovereignty

主权
Meaning
The authority of a state to govern itself or another state; supreme power or authority.
Example
Sovereignty is essential for a nation's identity.
主权对国家的身份至关重要。
C1 noun ˌsʌb.sɪ.dɪˈzeɪ.ʃən

subsidization

补贴
Meaning
Financial assistance provided by government to make certain goods or services more affordable.
Example
Subsidization of agriculture helps farmers maintain crop production.
农业补贴帮助农民维持作物生产。
C1 adjective /ˈsɒljʊbəl/

soluble

可溶的
Meaning
able to be dissolved, especially in water
Example
Sugar is soluble in water.
糖在水中可溶。
C1 noun /ˈʃeɪvɪŋ/

shaving

剃须
Meaning
the act of removing hair with a razor; a thin strip or piece shaved from something
Example
He bought a new cream for shaving.
他买了一款新的剃须膏。
C1 adjective /sɪˈnɒnɪməs/

synonymous

同义词
Meaning
having the same or nearly the same meaning; closely associated with something
Example
For many people, her name is synonymous with generosity.
对于许多人来说，她的名字是慷慨的同义词。
C1 noun /ˈskæf.əld/

Scaffold

脚手架
Meaning
a temporary structure used by workers to stand on when building or repairing something high; a platform for execution
Example
The workers erected a scaffold to paint the building's exterior.
工人们搭建了脚手架来粉刷建筑物的外部。
C1 noun ˌsætʃəˈreɪʃən

saturation

饱和
Meaning
The state of being saturated; the degree or extent to which something is dissolved or absorbed
Example
The saturation of the market with similar products reduced sales.
市场上的类似产品饱和度降低了销售额。
C1 verb /smɛlt/

smelt

冶炼
Meaning
to extract metal from its ore by heating and melting
Example
The workers smelt iron from its ore in the factory.
工人在工厂中从矿石中冶炼铁。
C1 adjective /səˈdʒɛstɪv/

suggestive

暗示的
Meaning
tending to suggest ideas or images; sometimes implies something sexual or provocative
Example
The painting was highly suggestive and sparked much debate.
这幅画非常暗示，并引发了许多争论。
C1 adjective /ˈsɪn.tɪ.leɪ.tɪŋ/

scintillating

闪耀的
Meaning
brilliantly clever, exciting, or sparkling
Example
Her scintillating conversation kept everyone entertained.
她那闪耀的谈话让每个人都感到娱乐。
C1 noun /skwɔːl/

squall

暴风骤雨
Meaning
a sudden violent gust of wind, often accompanied by rain, snow, or sleet
Example
A sudden squall caught the sailors off guard.
一阵突如其来的暴风骤雨让水手们措手不及。
C1 verb /ˈstɪɡmətaɪz/

stigmatize

污名化
Meaning
to describe or regard someone as worthy of disgrace or disapproval
Example
People with certain illnesses are often unfairly stigmatized.
患有某些疾病的人常常被不公正地污名化。
C1 adjective /ˈskeɪðɪŋ/

scathing

尖锐的批评
Meaning
severely critical; harshly scornful
Example
The critic wrote a scathing review of the movie.
评论家写了一篇尖锐的电影评论。
C1 noun /ˈsiːskeɪp/

seascape

海景
Meaning
A view or painting of the sea.
Example
The artist painted a beautiful seascape at sunset.
艺术家在日落时画了一幅美丽的海景。
C1 noun /sɔɪl ˈmæn.ɪdʒ.mənt/

soil management

土壤管理
Meaning
The application of operations, practices, and treatments to protect soil and enhance its performance.
Example
Proper soil management improves long-term agricultural productivity.
适当的土壤管理可以提高长期农业生产力。
C1 adjective /ˈskɪtɪʃ/

skittish

紧张的
Meaning
easily frightened or nervous; unpredictable
Example
The horse was too skittish to ride.
那匹马太紧张，无法骑乘。
C1 noun /ˌsɛlf əˌfɜːˈmeɪʃən/

self-affirmation

自我肯定
Meaning
The practice of affirming one's own worthiness and value as an individual.
Example
Daily self-affirmation can boost your confidence.
每日自我肯定可以增强你的自信。
C1 adjective /ˈskɔːrnfəl/

Scornful

轻蔑的
Meaning
showing contempt or disdain; expressing scorn
Example
She gave him a scornful look when he made the rude comment.
当他做出粗鲁的评论时，她投以蔑视的目光。
C1 adjective /ˈsɪlkən/

Silken

丝绸的; 柔软的; 光滑的;
Meaning
made of silk; smooth and soft like silk
Example
She wore a beautiful silken dress to the party.
她穿了一件漂亮的丝绸裙子去参加聚会。
C1 verb /səˈfɪstɪkeɪt/

sophisticate

使精致
Meaning
to make something more complex or refined; to educate or develop in taste and manners
Example
Traveling abroad helped sophisticate his worldview.
出国旅行帮助他完善了世界观。
C1 adjective ˈsek.tər spəˈsɪf.ɪk

sector-specific

行业特定
Meaning
Relating to or designed for a particular sector or industry.
Example
Sector-specific policies attract targeted investments.
行业特定的政策吸引了定向投资。
C1 noun /səˈbætɪkəl/

sabbatical

用于学习或旅行的休假期
Meaning
A period of paid leave granted to a teacher or worker for study or travel, traditionally every seventh year.
Example
She took a sabbatical to research her new book.
她为了研究她的新书而休了一个萨巴提卡尔假期。
C1 verb /ˈskaʊər/

scour

擦洗 / 彻底搜索
Meaning
to clean or brighten the surface of something by scrubbing; to search thoroughly
Example
She scoured the kitchen until it shone.
她打扫厨房直到它闪闪发光。
C1 noun /ˈsəʊdiəm/

sodium

钠
Meaning
a soft, silver-white chemical element that is highly reactive and found in salt.
Example
Sodium is an essential element for maintaining fluid balance in the body.
钠是维持体内液体平衡的必需元素。
C1 noun /spæt/

spat

小争吵
Meaning
a short, petty quarrel or argument
Example
They had a brief spat about who should do the dishes.
他们就谁应该洗碗发生了一个小争吵。
C1 adjective /ˈsɜːrli/

surly

脾气暴躁
Meaning
bad-tempered and unfriendly
Example
The waiter gave us a surly look when we asked for more water.
当我们要求更多的水时，服务员用脾气暴躁的目光看着我们。
C1 adjective /ˈsʌpl/

supple

柔韧的
Meaning
Easily bending or moving without breaking; flexible and adaptable.
Example
The gymnast’s body was remarkably supple.
体操运动员的身体异常柔韧。
C1 adjective /ˈsʌbstəntɪv/

substantive

重要
Meaning
Having a firm basis in reality; important, meaningful, or considerable.
Example
The company made substantive changes to its policy.
公司对其政策进行了重要更改。
C1 /ʃrɛd/

shred

撕裂
Meaning
to tear or cut something into small pieces
Example
She shredded the old documents before throwing them away.
她在扔掉之前把旧文件撕成了碎片。
C1 noun /ˈsɑːri/

Saree

纱丽
Meaning
a garment consisting of a length of cotton or silk elaborately draped around the body, traditionally worn by women from South Asia
Example
She looked elegant in her red silk saree at the festival.
她在节日上穿着红色丝绸纱丽看起来非常优雅。
C1 noun, adjective, verb /ʃæm/

sham

虚假
Meaning
something that is not what it appears to be; a false or fake thing; to pretend
Example
The deal turned out to be a sham.
这笔交易被证明是虚假的。
C1 verb /ˈskʌt.əl/

scuttle

幸福
Meaning
To run hurriedly with short, quick steps; or to deliberately sink a ship.
Example
The children scuttled back to their seats when the teacher entered.
她在收到奖项时无法掩饰她的幸福感。
C1 verb, noun /spraʊt/

sprout

发芽
Meaning
to begin to grow; to produce new leaves or shoots
Example
The seeds began to sprout after a few days of rain.
种子在几天的雨后开始发芽。
C1 adjective /sɪmˈfɒnɪk/

symphonic

交响乐的
Meaning
relating to or having the character of a symphony or symphony orchestra
Example
The concert featured a symphonic masterpiece.
音乐会展示了一部交响乐的杰作。
C1 noun /səbˈmɪtəl/

submittal

提交
Meaning
the act of submitting something, especially a document for consideration or approval
Example
The contractor sent the submittal to the client for approval.
承包商将提交给客户以供批准。
C1 noun /ˈspɛkjʊˌleɪtər/

speculator

投机者
Meaning
A person who forms theories without evidence, or invests in assets hoping for profit.
Example
The real estate speculator bought land hoping its value would rise.
房地产投机者购买了土地，希望其价值会增加。
C1 verb/noun /ˈsɒldər/

solder

焊接
Meaning
To join metal parts together by melting and putting a filler metal into the joint
Example
He soldered the broken wires back together.
他将断裂的电线重新焊接在一起。
C1 noun /ˈʃɜːrbət/

sherbet

雪葩
Meaning
a sweet flavored drink or a frozen dessert made from sweetened fruit juice
Example
On hot days, she enjoys a glass of lemon sherbet.
在炎热的日子里，她喜欢喝一杯柠檬雪葩。
C1 noun /stɪnt/

stint

短期工作
Meaning
a period of time spent doing a particular job or activity
Example
She did a short stint as a teacher before moving abroad.
她在搬到国外之前做了一段短时间的教师工作。
C1 adjective /ˌsæŋktɪˈmoʊniəs/

sanctimonious

伪善的虔诚
Meaning
Making a show of being morally superior to others; hypocritically pious.
Example
He gave a sanctimonious speech about honesty while he himself was corrupt.
他发表了一篇关于诚实的伪善演讲，而他自己却腐败了。
C1 noun /ˈsɒlstɪs/

solstice

至点
Meaning
the two times in the year when the sun is at its greatest distance from the equator (summer and winter solstice)
Example
People celebrate the summer solstice with festivals and rituals.
人们通过节日和仪式庆祝夏至。
C1 noun /slæɡ/

slag

炉渣
Meaning
Stony waste matter separated from metals during the smelting process.
Example
The factory dumped the slag near the river.
工厂把炉渣倾倒在河边。
C1 noun /ˈskwɒtər/

squatter

非法占领者
Meaning
a person who unlawfully occupies an uninhabited building or unused land
Example
The police removed the squatters from the abandoned house.
警方将非法占领者从废弃的房屋中驱逐了出去。
C1 adjective /ˈsɜːrvɪsəbl/

serviceable

可用
Meaning
fit for use; usable; in working order
Example
The old bicycle is still serviceable despite its age.
那辆旧自行车尽管年久失修，仍然可用。
C1 adjective /stiːpt/

steeped

浸透
Meaning
Completely surrounded by or filled with a particular quality, influence, or experience.
Example
The town is steeped in history and tradition.
这座城市充满了历史和传统。
C1 noun /səˈlɪn.ə.t̬i/

salinity

盐度, 盐浓度
Meaning
The salt content of soil or water, typically measured as a concentration.
Example
The salinity of the ocean varies depending on depth and location.
海洋的盐度会根据深度和位置变化。
C1 adjective /sɪˈmɛtrɪkəl/

symmetrical

对称的
Meaning
having parts on either side that match or are the same in shape, size, or arrangement
Example
The artist designed a symmetrical pattern on the floor.
艺术家在地板上设计了一个对称的图案。
C1 verb /ˈʃɪmər/

shimmer

闪烁
Meaning
To shine with a soft, wavering light.
Example
The lake shimmered under the moonlight.
湖泊在月光下闪烁。
C1 verb ˈsɪn.ɚ.dʒaɪz

synergize

协同工作以提高效率。
Meaning
combine in such a way as to enhance effectiveness.
Example
The departments must synergize to improve efficiency.
各部门必须协作以提高效率。
C1 adjective /ˈsiː.naɪl/

senile

与年龄相关的虚弱
Meaning
Showing the weaknesses of old age, especially mental decline.
Example
The old man became senile and forgot familiar faces.
老人变得衰老，忘记了熟悉的面孔。
C1 adjective /səbˈsɪd.i.ər.i/

Subsidiary

附属的; 次要的; 与子公司相关
Meaning
less important than the main thing; secondary; of or relating to a subsidiary company
Example
The subsidiary company handles all overseas operations.
子公司负责所有海外业务。
C1 adjective /ˈsɜːrpənˌtiːn/

serpentine

蛇形的
Meaning
Having the shape, movement, or qualities of a serpent; winding or twisting.
Example
The road took a serpentine path through the mountains.
这条路穿过山脉，呈蛇形蜿蜒。
C1 verb /ˈstoʊnwɔːl/

stonewall

阻挡
Meaning
To delay or block progress by refusing to cooperate or answer
Example
The witness tried to stonewall during the investigation.
证人试图在调查期间做stonewall。
C1 noun /ˈskaɪ.lɑːrk/

Sky-Lark

云雀
Meaning
a small brown bird known for singing while flying high in the sky
Example
The skylark sang beautifully as it soared above the meadow.
当云雀飞翔在草地上方时，它美丽地歌唱。
C1 noun /strəˈtiː.dʒɪk ˈɪn.saɪts/

strategic insights

战略洞察力
Meaning
Deep understanding and wisdom gained through careful analysis for planning purposes.
Example
Strategic insights guide policymaking.
战略洞察力引导政策制定。
C1 adjective /ˈstrɪndʒənt/

stringent

严格
Meaning
strict, precise, and exacting
Example
The government imposed stringent measures during the crisis.
政府在危机期间实施了严格的措施。
C1 verb ˈsɪŋ.krə.naɪz

synchronize

同步
Meaning
To coordinate in time; to cause to occur or operate at the same time or rate.
Example
The dancers need to synchronize their movements.
舞者需要同步他们的动作。
C1 adjective /ˈʃeɪp.ləs/

Shapeless

无形的
Meaning
having no definite or well-defined shape or form
Example
The fog created a shapeless mass in the distance.
雾气在远处形成了无形的团块。
C1 noun səˌsɛp.təˈbɪl.ə.ti

susceptibility

易感性
Meaning
The quality of being likely to be influenced or harmed by a particular thing; vulnerability.
Example
High susceptibility to infections requires extra care.
对感染的高易感性需要额外的护理。
C1 adjective /ˈsæŋɡwɪn/

sanguine

乐观的
Meaning
Optimistic or positive, especially in a difficult situation.
Example
Despite the challenges, she remained sanguine about the future.
尽管面临挑战，她依然对未来保持乐观。
C1 adjective /ˈsʌltri/

sultry

酷热潮湿，迷人
Meaning
Uncomfortably hot and humid; also describes someone attractive in a passionate or sensual way.
Example
The sultry weather made it hard to focus on work.
酷热潮湿的天气使得集中精力工作变得困难。
C1 verb /səˈplænt/

supplant

取代
Meaning
To take the place of something or someone, often by force or strategy.
Example
Digital platforms have supplanted traditional newspapers.
数字平台已经取代了传统报纸。
C1 noun /ˌsɛnsɪtaɪˈzeɪʃən/

sensitization

敏感化
Meaning
The process of becoming sensitive to a substance, situation, or influence.
Example
The doctor warned about the sensitization caused by repeated exposure to chemicals.
医生警告了由于反复接触化学品引起的敏感化。