Safely
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A2 adverb /ˈseɪf.li/

Safely

安全
Meaning
in a safe manner; without danger or risk
Example
Drive safely on the icy road.
在结冰的道路上安全行驶。
B2 verb /stɑːv/

starve

饿死
Meaning
to suffer or die from lack of food
Example
He was left to starve in the desert.
他被丢在沙漠里饿死。
B2 adjective /skeərs/

Scarce

稀有的；难以找到的；以小量存在
Meaning
rare; not easily found; existing in small quantities
Example
Fresh water is becoming increasingly scarce in desert regions.
在沙漠地区，淡水变得越来越稀缺。
B1 noun səˈluː.ʃənz

solutions

解决方案
Meaning
A means of solving a problem or dealing with a difficult situation.
Example
Biotechnology provides solutions to environmental challenges.
生物技术为环境问题提供解决方案。
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。
B2 adjective /slɪk/

slick

光滑的
Meaning
Smooth, clever, or efficient, often in a way that seems superficial.
Example
He gave a slick presentation to impress the investors.
他做了一个光滑的演示，以打动投资者。
C1 adjective ˌsəʊsɪəʊpəˈlɪtɪkəl

sociopolitical

社会政治
Meaning
Combining social and political factors.
Example
Sociopolitical factors often influence public policy decisions.
社会政治因素经常影响公共政策决策。
C2 verb /sweɪð/

swathe

Meaning
To wrap or cover closely or completely.
Example
She swathed the baby in a soft blanket.
B2 noun /spɑːrk/

Spark

火花
Meaning
a small fiery particle thrown off from a fire; a flash of light; something that triggers or initiates
Example
A spark from the campfire ignited the dry leaves.
篝火中的一颗火花点燃了干叶。
C1 adjective /sɛkˈtɛəriən/

sectarian

宗派的
Meaning
relating to or characterized by the differences between sects, often leading to conflict
Example
The region has been troubled by sectarian violence for decades.
该地区几十年来一直受到宗派暴力的困扰。
B1 noun /stæf/

staff

员工
Meaning
a group of employees working together in an organization
Example
The staff at the hospital are very helpful.
医院的员工非常有帮助。
C1 adjective /səˈdɪs.tɪk/

sadistic

施虐狂
Meaning
Deriving pleasure from inflicting pain or suffering on others.
Example
The villain had a sadistic smile while hurting his enemies.
恶棍在伤害敌人时露出了施虐狂的笑容。
A2 adverb /ˈsʌd.ən.li/

Suddenly

突然
Meaning
quickly and without warning; unexpectedly
Example
The car suddenly stopped in the middle of the road.
车子突然停在了路中间。
C1 adjective /ˌsɛlf ɪˈfeɪsɪŋ/

self-effacing

谦虚的
Meaning
not drawing attention to oneself; modest
Example
Despite his success, he remained self-effacing and humble.
尽管他取得了成功，他仍然保持谦虚和谦逊。
A1 adjective /stɪl/

still

静止
Meaning
not moving or making a sound
Example
The water was still, reflecting the sky.
水面静止，反射着天空。
C1 noun/verb /ˈslʌmbər/

slumber

睡眠
Meaning
A state of sleep; to sleep lightly or rest.
Example
The child slumbered peacefully through the night.
孩子整夜安静地睡觉。
B1 noun /ˈsɜr.fɪs/

Surface

表面; 上层
Meaning
the outside part or uppermost layer of something
Example
The submarine emerged to the surface of the ocean.
潜水艇浮出海面。
A2 verb /səkˈsiːd/

succeed

成功
Meaning
to achieve the desired aim or result; to do well
Example
She worked hard to succeed in her career.
她努力工作，力图在事业中取得成功。
C1 verb /səˈlɪsɪt/

solicit

请求
Meaning
to ask for or try to obtain something from someone
Example
The charity is soliciting donations for flood victims.
慈善机构正在为洪水灾民募捐。
C2 noun /ˈsɜːfdəm/

serfdom

农奴制
Meaning
The status or condition of being a serf, bound to work for a lord.
Example
Many peasants in medieval Europe lived under serfdom.
许多中世纪欧洲的农民生活在农奴制下。
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。
B2 noun /ˈsɜːdʒən/

surgeon

外科医生
Meaning
a doctor who performs medical operations
Example
The surgeon performed a complex heart operation.
外科医生进行了复杂的心脏手术。
B2 noun /spekˈteɪtər/

Spectator

观众
Meaning
a person who watches at a show, game, or other event; an observer
Example
The stadium was filled with excited spectators.
体育场坐满了兴奋的观众。
B2 noun /ˈsɑːfmɔːr/

sophomore

大二学生
Meaning
a student in their second year of study at a university or high school
Example
He’s a sophomore in college, studying computer science.
他是大学的二年级学生，学习计算机科学。
C1 noun /ˈstoʊəˌweɪ/

stowaway

偷渡者
Meaning
A person who hides on a ship, plane, or other vehicle in order to travel secretly without paying.
Example
The crew discovered a stowaway hiding in the cargo hold.
船员发现一个藏在货舱里的偷渡者。
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 verb /səbˈsɪst/

subsist

生存
Meaning
To maintain or support oneself, especially at a minimal level.
Example
Many villagers still subsist on fishing and farming.
许多村民仍然依靠捕鱼和农业为生。
C2 verb /ʃiːð/

sheathe

放回剑鞘
Meaning
to put a sword or knife back into its cover
Example
He quickly sheathed his sword after the duel.
他在决斗后迅速把剑重新放回剑鞘。
C1 verb /ˈstaɪfəld/

stifled

压制
Meaning
to suppress, hold back, or prevent something from happening
Example
He stifled a laugh during the serious meeting.
他在严肃的会议中压制了笑声。
B2 adjective /ˈʃeɪ.ki/

Shaky

不稳定的; 发抖的; 不可靠的; 弱的
Meaning
unstable; trembling; unreliable; weak
Example
His voice was shaky with nervousness.
他的声音因紧张而颤抖。
B1 noun /swet/

Sweat

汗水
Meaning
moisture exuded through the pores of the skin, typically as a reaction to heat, physical exertion, fever, or fear
Example
After running for an hour, he was covered in sweat.
跑了一小时后，他浑身是汗。
C1 adjective /səkˈsɪŋkt/

succinct

简洁
Meaning
Briefly and clearly expressed; characterized by clear, precise expression in few words.
Example
His speech was succinct and impactful.
他的演讲简洁且有影响力。
B1 adverb /ˈspeʃ.əl.i/

Specially

特别
Meaning
for a particular purpose; especially; specifically
Example
This gift was specially made for you.
这个礼物是特别为你做的。
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。
B2 adjective /stɪf/

Stiff

僵硬的; 坚固的; 刚硬的
Meaning
not easily bent or changed; rigid; firm
Example
The old wooden board was too stiff to bend.
那块老木板太硬了，弯不起来。
C1 adjective /ˈspjʊəriəs/

spurious

虚假的 / 假冒的
Meaning
Not genuine, authentic, or true; false or fake.
Example
The report was based on spurious claims.
报告基于虚假的声明。
B2 noun /suː.pɪər.iˈɔːr.ə.ti/

Superiority

优越性
Meaning
the quality or state of being superior; higher rank or quality
Example
His superiority in mathematics was evident from his test scores.
他在数学上的优越性从他的考试成绩中显而易见。
C2 verb /ˈstʌltɪfaɪ/

stultify

使某人或某物显得愚蠢，或阻碍效率和热情
Meaning
to make someone or something appear foolish, or to hinder effectiveness and enthusiasm
Example
The repetitive tasks seemed to stultify the workers' creativity.
重复的任务似乎使工人的创造力变得迟钝。
C1 adjective /ˈskwɒlɪd/

squalid

极其脏乱
Meaning
extremely dirty and unpleasant, often due to poverty or neglect
Example
He lived in a squalid room with broken furniture.
他住在一个脏乱的房间里，里面有坏掉的家具。
C1 adjective /stjuːˈpɛndəs/

stupendous

惊人的
Meaning
extremely impressive; amazing in size, degree, or excellence
Example
The magician’s performance was simply stupendous.
魔术师的表演简直是惊人的。
B2 noun /stɔːrk/

Stork

鹳
Meaning
large wading bird with long legs and a long neck
Example
The stork built its nest on top of the tall chimney.
鹳在高烟囱上建造了它的巢。
B2 noun /səˈnɛərioʊ/

scenario

可能的情境
Meaning
a possible situation or sequence of events
Example
The company prepared for the worst-case scenario.
公司为最坏的情况做了准备。
C1 verb /sɪˈdjuːs/

seduce

Meaning
to attract someone into doing something, especially something they might not normally do
Example
The advertisement was designed to seduce customers into buying luxury products.
B2 noun ˈsʌbstɪˌtut

substitute

替代品
Meaning
A person or thing acting or serving in place of another.
Example
Money cannot be a substitute for genuine happiness.
钱不能成为真正幸福的替代品。
B2 noun /səbˈmɪʃən/

submission

提交, 顺从
Meaning
the act of yielding to authority or presenting something for consideration
Example
Her submission of the report was appreciated by the manager.
她提交的报告受到了经理的赞赏。
B2 adjective /ˌsuː.pəˈnætʃ.ər.əl/

Supernatural

超自然的
Meaning
relating to things that cannot be explained by natural or scientific laws; beyond the normal or physical world
Example
The old house was said to have supernatural powers.
据说那座老房子具有超自然的力量。
B2 noun ˈsɪblɪŋz

Siblings

兄弟姐妹
Meaning
Each of two or more children or offspring having one or both parents in common.
Example
Siblings are usually placed on the same level in a family tree.
兄弟姐妹通常在家谱中处于同一水平。
C1 verb /ʃɪə/

shear

修剪
Meaning
to cut the wool off a sheep or to cut something with sharp tools like scissors or shears
Example
The farmer will shear the sheep in the spring.
农民将在春天修剪羊毛。
B2 noun /ˈʃuːtɪŋ/

shooting

拍摄
Meaning
the action of shooting a gun, camera, or similar device
Example
The shooting of the movie took several months.
电影的拍摄花费了几个月的时间。
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 verb /skɪmp/

skimp

节省
Meaning
to use less of something than is necessary in order to save money or effort
Example
Don’t skimp on quality when buying a new laptop.
购买新笔记本时不要节省质量。
C1 verb /ˌsuːpərɪmˈpoʊz/

superimpose

叠加
Meaning
to place one thing on top of another so that both can be seen
Example
The editor superimposed text over the image.
编辑将文本叠加在图片上。
B2 noun /spaɪs/

spice

香料
Meaning
a substance used to add flavor to food
Example
She added a pinch of spice to the curry for extra flavor.
她在咖喱里加入了一撮香料以增加味道。
B1 verb /siːl/

seal

封闭，密封
Meaning
to close or secure something tightly or officially confirm something
Example
He sealed the envelope before sending the letter.
他在寄信之前封住了信封。
B2 noun sliːp ˌdɛprɪˈveɪʃən

sleep deprivation

睡眠不足
Meaning
The condition of not having enough sleep; lack of adequate sleep.
Example
Sleep deprivation can severely impact mental health.
睡眠不足可能严重影响心理健康。
C2 adjective /ˈsæŋɡwɪˌnɛri/

sanguinary

血腥的
Meaning
Involving or causing much bloodshed; bloodthirsty.
Example
The battle was one of the most sanguinary conflicts of the war.
这场战斗是战争中最血腥的冲突之一。
C1 adjective /ˈsɛptɪk/

septic

感染的
Meaning
Infected with harmful bacteria; relating to or causing infection.
Example
The doctor treated the patient's septic wound immediately.
医生立即处理了病人的脓毒伤口。
C1 noun /ˈsæf.rən/

Saffron

藏红花
Meaning
a deep yellow-orange color; an expensive spice derived from crocus flowers
Example
The saffron fabric looked beautiful in the sunlight.
藏红花的面料在阳光下看起来非常美丽。
A2 adverb /ˈʃʊə.li/

Surely

肯定
Meaning
without doubt; certainly
Example
You will surely pass the exam if you study hard.
如果你努力学习，你肯定会通过考试。
B1 noun /ˈʃed.juːl/

Schedule

日程安排; 计划;
Meaning
a plan that lists things or events and the times when they will happen; timetable
Example
Please check your schedule before confirming the meeting time.
请在确认会议时间前查看您的时间表。
B1 verb /swɪtʃ/

switch

切换
Meaning
to change from one thing to another; to exchange or replace
Example
I switched from coffee to tea.
我从咖啡转到茶。
C1 adjective /ˌsɛlf ˈraɪtʃəs/

self-righteous

自以为是
Meaning
Having or showing an attitude of moral superiority; believing one’s own beliefs are the only right ones.
Example
His self-righteous comments made everyone uncomfortable.
他的自以为是的评论让每个人都感到不舒服。
C1 verb /ˈskævɪndʒ/

scavenge

在垃圾中寻找
Meaning
to search through waste or discarded material to find useful items
Example
The children scavenged for food in the garbage dump.
孩子们在垃圾堆里找食物。
B2 adjective /ˌsɪstəˈmætɪk/

systematic

系统的
Meaning
Done or acting according to a fixed plan or system; methodical.
Example
The company took a systematic approach to solving the issue.
公司采取了系统的方法来解决问题。
C1 adjective /ˌsekənd ˈreɪt/

second-rate

二流
Meaning
Of mediocre or inferior quality.
Example
The movie was entertaining but clearly second-rate compared to the original.
这部电影很有趣，但与原版相比明显是二流的。
B2 noun /ˈsɜːr.plʌs/

surplus

盈余
Meaning
An amount that is more than what is needed.
Example
The country has a surplus of food this year.
今年该国的食品盈余。
B2 noun /siːdʒ/

Sieze

围困
Meaning
a military operation to capture a place by surrounding it and cutting off supplies
Example
The siege of the castle lasted for three months.
城堡的围困持续了三个月。
C2 adjective /ˌsuː.pər.ɪˈrɑː.ɡə.tɔːr.i/

supererogatory

超额的
Meaning
Going beyond what is required or expected; more than necessary.
Example
His donation was supererogatory, far beyond what anyone had asked for.
他的捐赠是超额的，远远超过任何人要求的。
C1 noun /ˈstɪklər/

stickler

对规则严格的人
Meaning
a person who insists on a certain quality or standard of behavior
Example
He is a stickler for punctuality and never tolerates delays.
他非常严格地要求准时，从不容忍迟到。
C1 noun ˈsæŋktɪti

sanctity

神圣
Meaning
The state or quality of being holy, sacred, or saintly; ultimate importance.
Example
The sanctity of life should never be compromised.
生命的神圣性永远不应被妥协。
B2 noun /ˈspɔːrtsmən/

sportsman

运动员
Meaning
A person who is skilled in sports or enjoys participating in athletic activities.
Example
He is a true sportsman, always fair and respectful to his opponents.
他是一个真正的运动员，总是对对手公平和尊重。
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。
B1 noun /sɛks/

sex

性别
Meaning
the biological distinction between male and female; sexual activity
Example
He was asked about his sex at the doctor's office.
医生办公室询问了他的性别。
A2 adjective /sɪk/

Sick

生病的; 恶心的; 不舒服
Meaning
unwell; having a disease or illness; feeling nauseous
Example
She stayed home from work because she was feeling sick.
她因为感觉不舒服而请假在家。
C2 noun /ˈsweɪʒən/

suasion

劝说
Meaning
the act of persuading or influencing someone
Example
The leader used gentle suasion to win support for the plan.
领导者使用温和的劝说来赢得对计划的支持。
B1 noun /ˈsʌb.stəns/

Substance

物质
Meaning
a particular kind of matter with uniform properties; the essential nature of something; material or content
Example
The scientist analyzed the unknown substance in the laboratory.
科学家在实验室分析了未知物质。
A2 modal verb /ʃæl/

shall

将
Meaning
used to express the future or indicate an intention or determination
Example
I shall return before sunset.
我将在日落之前回来。
B2 noun /ˌsɪmjuˈleɪʃən/

simulation

模拟
Meaning
the imitation of a situation or process
Example
The simulation helped the students understand the complex theory.
模拟帮助学生理解复杂的理论。
B1 verb /sɪŋk/

sink

沉没
Meaning
to go down below the surface; to descend
Example
The ship sinks in the deep ocean.
船沉入深海。
C1 verb /skʌf/

scuff

擦伤
Meaning
to mark or scratch the surface of something by rubbing
Example
He scuffed his shoes on the pavement.
他在人行道上擦伤了他的鞋子。
B2 noun /sɛnˈseɪʃən/

Sensation

感觉
Meaning
a physical feeling or perception resulting from something that happens to or comes into contact with the body; a widespread reaction of interest and excitement
Example
The new singer became an overnight sensation.
这位新歌手一夜之间成名，成为轰动一时的现象级人物。
B2 adverb /ˈsɒftli/

softly

轻声或平静地
Meaning
in a gentle or quiet way.
Example
She spoke softly so as not to wake the baby.
她轻声说话以免吵醒宝宝。
B2 adjective, noun /ˈsɪŋɡjələr/

singular

非凡 / 单数
Meaning
Remarkable, extraordinary; or grammatical form referring to one person or thing.
Example
She has a singular talent for painting.
她在绘画方面有非凡的才华。
B1 noun /sʌm/

sum

和
Meaning
the total amount resulting from the addition of two or more numbers or items
Example
The sum of 8 and 12 is 20.
8和12的和是20。
B2 adjective /stɜːrn/

Stern

严格的；严厉的
Meaning
serious and demanding exact conformity to rules; strict and severe
Example
The teacher gave the students a stern warning about cheating.
老师给学生们关于作弊的严厉警告。
C2 adjective /səˈɡeɪ.ʃəs/

sagacious

贤明
Meaning
Having or showing keen mental discernment and good judgment; wise.
Example
His sagacious leadership saved the company from failure.
他的贤明领导力使公司免于失败。
A2 noun /skɪlz/

skills

技能
Meaning
The ability to do something well; expertise.
Example
Learning new skills can increase personal and professional growth.
学习新技能可以增加个人和职业发展。
C2 noun /ˈswɑːvɪti/

suavity

优雅与魅力
Meaning
smoothness and charm in manner
Example
His suavity made him popular in social gatherings.
他的优雅与魅力使他在社交聚会中很受欢迎。
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。
A2 noun /ʃiːp/

sheep

羊
Meaning
a farm animal with thick wool that is raised for its wool, meat, and milk
Example
The farmer keeps a large flock of sheep.
农民养着一大群羊。
B2 noun /soʊp keɪs/

Soap case

肥皂盒
Meaning
a container used to store soap
Example
She bought a beautiful soap case for the bathroom.
她为浴室买了一个漂亮的肥皂盒。
B2 verb /ˈsɒfən/

soften

使变软
Meaning
to make or become less hard, severe, or strong.
Example
Heat will soften the butter quickly.
热量会很快使黄油变软。
B2 verb /ˈsmʌɡəl/

smuggle

Meaning
to move goods illegally into or out of a country
Example
The gang tried to smuggle gold across the border.
B2 adjective/noun /staʊt/

stout

强壮 / 粗壮
Meaning
Strong, thick, or heavily built; also a kind of dark beer
Example
The stout man lifted the heavy box with ease.
这个强壮的男人轻松地举起了沉重的箱子。
A2 adverb /ˈsloʊli/

slowly

慢慢地
Meaning
in a slow manner
Example
She walked slowly to the door.
她慢慢地走向门。
B2 noun /ˈsiːkər/

seeker

寻求者
Meaning
a person who is looking for something, especially knowledge or truth
Example
The seeker traveled far to find the answers to his questions.
寻求者远行去寻找他问题的答案。
B2 noun /speɪd/

Spade

铲子
Meaning
a tool with a flat blade for digging; a playing card suit
Example
The gardener used a spade to dig holes for planting flowers.
园丁用铲子挖洞种花。
B2 adjective /ˈsʌb.sɪ.kwənt/

subsequent

随后的
Meaning
Coming after something in time; following in time or order.
Example
Subsequent events clarified the outcomes.
随后的事件澄清了结果。
B1 verb /skrætʃ/

scratch

幸福
Meaning
to rub a surface or skin with something sharp or rough, often to relieve itching
Example
The cat scratched the door to be let in.
当她收到奖项时，她无法掩饰自己的幸福。
C1 noun /ˌsəʊʃəˈbɪləti/

sociability

社交性
Meaning
The quality or state of being sociable; friendliness.
Example
Her sociability made her popular in the office.
她的社交性使她在办公室中非常受欢迎。
C2 noun /ˈsɪŋkrəˌnɪzəm/

synchronism

同步
Meaning
The simultaneous occurrence of events or actions.
Example
The synchronism of the dancers' movements amazed the audience.
舞者动作的同步让观众感到惊讶。
B2 adjective /səˈbɜːrbən/

suburban

郊区的
Meaning
relating to or characteristic of a suburb or the people living there
Example
They bought a house in a quiet suburban area.
他们在一个安静的郊区买了一栋房子。
C2 adjective /ˈslæp.dæʃ/

slapdash

草率
Meaning
done too quickly and carelessly; hasty and careless
Example
The report was written in a slapdash manner, full of errors.
报告写得草率，充满了错误。
C1 noun /ˈsɛntɪnəl/

sentinel

哨兵
Meaning
A soldier or guard whose job is to stand and keep watch.
Example
A sentinel stood at the entrance of the camp.
一个哨兵站在营地的入口处。
A2 adjective /sɪksθ/

sixth

第六
Meaning
coming after the fifth in order, position, or rank
Example
He finished the race in sixth place.
他在比赛中获得了第六名。
C1 noun /ˈspɔɪlˌspɔːrt/

spoilsport

扫兴的人
Meaning
A person who ruins other people's enjoyment or fun.
Example
Don't be a spoilsport and let us enjoy the party.
不要做扫兴的人，放我们享受派对吧。
B2 noun /strɔː/

straw

稻草或吸管
Meaning
a thin tube for sucking up liquids; dried stalks of grain plants
Example
She drank the juice through a straw.
她通过吸管喝了果汁。
B1 adjective ˌsaɪənˈtɪfɪk

scientific

科学的
Meaning
Based on or characterized by the methods and principles of science.
Example
Scientific discoveries continue to shape our understanding of the world.
科学发现继续塑造我们对世界的理解。
C2 noun /ˈsʌbtərˌfjuːdʒ/

subterfuge

欺诈手段
Meaning
Deceit used to achieve one's goal; a trick or excuse to evade something.
Example
They used subterfuge to avoid paying taxes.
他们使用欺诈手段来避免缴税。
B1 verb /səˈspɛkt/

suspect

怀疑
Meaning
to believe that someone has done something wrong; to doubt or mistrust
Example
I suspect he is lying about his whereabouts.
我怀疑他在谎报自己的下落。
B2 verb /slæʃ/

slash

切割
Meaning
to cut with a sharp blade; to reduce drastically
Example
The company slashed prices to attract more customers.
公司大幅削减价格以吸引更多顾客。
C1 adjective /ˈspraɪtli/

sprightly

活泼
Meaning
full of energy and life; lively
Example
The sprightly old man danced with joy at the wedding.
那位活泼的老人高兴地在婚礼上跳舞。
C1 adjective sɪˈmæn.tɪk

semantic

与语言中的意义相关
Meaning
Related to meaning in language; concerning the interpretation of words and sentences.
Example
AI models use semantic analysis to understand context.
人工智能模型使用语义分析来理解上下文。
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。
C2 verb /ˈsʌk.əl/

suckle

哺乳
Meaning
to feed a baby or young animal with milk from the breast or udder
Example
The mother cat suckled her kittens in the basket.
母猫在篮子里哺乳她的小猫。
B2 verb /stæk/

stack

Meaning
to arrange things in a neat pile or one on top of another
Example
He stacked the books neatly on the shelf.
C2 noun /sɪnˈtɪl.ə/

scintilla

小小的火花
Meaning
A tiny trace or spark of a specified quality or feeling.
Example
There wasn’t a scintilla of doubt in her mind.
她的脑海中没有一丝疑虑。
B2 noun /ˈskɔːr.pi.ən/

Scorpion

蝎子
Meaning
a small creature with eight legs, two claws, and a curved tail with a poisonous sting
Example
The scorpion hid under the rock during the day.
蝎子在白天藏在石头下。
B2 verb /ˈsʌməraɪz/

summarize

总结
Meaning
To give a brief statement of the main points of something
Example
She summarized the report in just a few minutes.
她在几分钟内总结了报告。
C1 noun ˌsæn.ɪ.taɪˈzeɪ.ʃən

sanitization

消毒
Meaning
The process of cleaning and disinfecting to eliminate germs and bacteria.
Example
Regular sanitization keeps appliances germ-free.
定期消毒保持设备无菌。
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。