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A1 verb /steɪ/

stay

停留
Meaning
to remain in the same place; to continue being
Example
Please stay here until I return.
请留在这里直到我回来。
B2 adverb /ˈsɛkʃuəli/

sexually

性行为
Meaning
in a way that relates to or involves sexual activity or feelings
Example
The film was considered too sexually explicit for young audiences.
这部电影被认为对年轻观众来说过于性行为露骨。
C2 verb /swɪl/

swill

贪婪地喝
Meaning
to drink something greedily or in large amounts
Example
He swilled down the beer in seconds.
他几秒钟就把啤酒喝完了。
B2 verb /ˈsuːpərvaɪz/

supervise

监督
Meaning
to watch and direct a person or activity to ensure things are done correctly
Example
The teacher supervises students during the exam.
老师在考试期间监督学生。
C2 adjective /sɪˈlæbɪk/

syllabic

音节的
Meaning
Relating to or based on syllables.
Example
The teacher explained the syllabic structure of the word.
老师解释了这个词的音节结构。
B2 noun /ˈstɔːrɪdʒ/

storage

存储
Meaning
the action or method of storing something for future use
Example
The warehouse offers plenty of storage space.
仓库提供了大量的存储空间。
C1 noun /ˈstæl.i.ən/

stallion

用于繁殖的种马
Meaning
An adult male horse that is not castrated, often used for breeding.
Example
The farm owns a powerful stallion for breeding purposes.
农场拥有一匹强壮的种马用于繁殖。
A1 modal verb /ʃʊd/

should

应该
Meaning
used to indicate obligation or duty
Example
You should study for your exams.
你应该为考试学习。
B2 adjective /ˈʃæb.i/

Shabby

破旧的; 状况差的; 显示磨损迹象的; 不公平或残忍的
Meaning
worn out; in poor condition; showing signs of wear; unfair or mean
Example
His shabby clothes showed that he had been traveling for days.
他的破旧衣服显示他已经旅行了几天。
B2 noun /ˌsɛlf ɪˈstiːm/

self-esteem

自尊
Meaning
confidence in one's own worth or abilities; self-respect
Example
Building self-esteem takes time and consistent effort.
建立自尊需要时间和持续的努力。
B2 noun/verb /ˈsoʊ.ɪŋ/

sewing

缝纫
Meaning
The activity or skill of joining fabric using a needle and thread
Example
She enjoys sewing her own clothes on weekends.
她喜欢在周末缝制自己的衣服。
C1 noun /saɪð/

scythe

镰刀
Meaning
A tool with a long curved blade used for cutting grass or grain.
Example
The farmer sharpened his scythe before harvesting the wheat.
农民在收割小麦之前磨利了他的镰刀。
A1 noun /ˈsændwɪtʃ/

sandwich

三明治
Meaning
two pieces of bread with food such as meat, cheese, or salad between them
Example
I made a chicken sandwich for lunch.
我做了一个鸡肉三明治作为午餐。
C1 adjective /suːˈpɜːr.flu.əs/

superfluous

多余的
Meaning
Unnecessary, especially through being more than enough.
Example
His speech contained too many superfluous details.
他的演讲包含了太多多余的细节。
A1 determiner /sʌm/

some

一些
Meaning
an unspecified amount or number of something
Example
I have some money in my wallet.
我的钱包里有一些钱。
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。
A2 noun ˈsɜːvɪsɪz

services

服务
Meaning
The action of helping or doing work for someone.
Example
Services in the healthcare industry are essential for well-being.
医疗行业的服务对于健康至关重要。
A2 verb /stɪk/

stick

粘贴
Meaning
to adhere or attach something to a surface
Example
The glue will stick to the paper.
胶水会粘在纸上。
C1 adjective /ˈstrætɪfaɪd/

stratified

Meaning
arranged or classified in layers or strata
Example
Society in the past was highly stratified based on class and wealth.
B2 noun /ˈʃʌtəl/

shuttle

在两个地点之间定期往返的交通工具
Meaning
a vehicle or craft that travels regularly between two places.
Example
The airport shuttle runs every 30 minutes.
机场接驳车每30分钟运行一次。
B2 verb /ˈskrɪbəl/

scribble

乱涂乱画
Meaning
to write or draw carelessly or quickly
Example
The child scribbled all over the wall.
孩子在墙上乱涂乱画。
A2 noun ˈsaɪən.tɪst

scientist

科学家
Meaning
A person who is studying or has expert knowledge of one or more of the natural or physical sciences.
Example
The scientist proposed data-driven reforms.
这位科学家提出了基于数据的改革。
A2 adjective /ˈsep.ər.ət/

Separate

分开; 独立; 单独; 分离
Meaning
distinct; not connected; individual; apart
Example
Please keep your personal and professional lives separate.
请保持您的个人和职业生活分开。
B1 noun /ˈsɛkʃən/

section

部分
Meaning
a distinct part or subdivision of something larger
Example
This section of the report needs further review.
报告的这一部分需要进一步审查。
C1 adjective /ˈspɛktrəl/

spectral

幽灵的
Meaning
Relating to a ghost or specter; ghostly. Also relating to a spectrum.
Example
The old mansion had a spectral atmosphere at night.
那座古老的宅邸晚上有一种幽灵般的氛围。
B1 adverb /ˈsel.dəm/

Seldom

很少
Meaning
not often; rarely; infrequently
Example
She seldom goes to the cinema.
她很少去电影院。
B2 noun səˈsteɪnəbl dɪˈvɛləpmənt

Sustainable Development

可持续发展
Meaning
Development that meets present needs without compromising the ability of future generations to meet their own needs.
Example
Eco-tourism contributes to sustainable development in local communities.
生态旅游有助于当地社区的可持续发展。
C1 adjective /snaɪd/

snide

讽刺的
Meaning
mocking or insulting in an indirect way
Example
He couldn’t resist making a snide comment about her dress.
他忍不住对她的裙子做出讽刺的评论。
C2 noun /ˈstrɪndʒənsi/

stringency

严格
Meaning
the quality of being strict, precise, or severe
Example
The stringency of the new rules surprised everyone.
新规则的严格性让所有人都感到惊讶。
B2 noun /ˈsɒlɪtjuːd/

solitude

孤独
Meaning
The state or situation of being alone.
Example
Solitude can provide the opportunity for deep reflection.
孤独可以提供深刻反思的机会。
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。
C1 noun/verb /ˈskɜːrmɪʃ/

skirmish

Meaning
a small or brief fight between groups of soldiers; to engage in such a fight
Example
The soldiers got into a skirmish near the border.
B1 adjective /ˌstreɪtˈfɔːwəd/

straightforward

直接
Meaning
easy to understand or do; simple
Example
Her explanation was straightforward and clear.
她的解释简洁明了。
C1 adjective /sɔɪld/

soiled

脏的
Meaning
dirty or stained; not clean
Example
His clothes were soiled after playing in the mud.
他在泥巴里玩后，衣服弄脏了。
B2 noun /ˈsʌb.sɪ.di/

subsidy

补贴
Meaning
Financial assistance provided by government to reduce costs of goods or services.
Example
The government provides a fuel subsidy to control prices.
政府提供燃料补贴以控制价格。
C1 noun səˈfɪʃənsi

sufficiency

充足性
Meaning
The condition of being adequate or enough; adequacy.
Example
The sufficiency of food supply is critical for survival.
食品供应的充足性对于生存至关重要。
B2 noun /ˈsɪmfəni/

Symphony

交响曲
Meaning
an elaborate musical composition for full orchestra, typically in four movements
Example
The orchestra performed Beethoven's Fifth Symphony.
乐团演奏了贝多芬的第五交响曲。
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。
A1 verb /sɪŋ/

sing

唱歌
Meaning
to make musical sounds with the voice
Example
She sings beautifully in the choir.
她在合唱团里唱得很美
B2 noun /ˈseɪf.ɡɑːrd/

Safeguard

保护措施
Meaning
measure or action designed to protect someone or something
Example
New safeguards were implemented to prevent data breaches.
已实施新的保护措施以防止数据泄露。
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 adjective /ˈslɒp.i/

Sloppy

马虎的; 脏的; 不经心做的
Meaning
careless; messy; done without care or attention to detail
Example
His sloppy handwriting was difficult to read.
他的潦草字迹很难读。
B2 noun /slæŋ/

Slang

俚语; 非正式语言
Meaning
very informal language that is usually spoken rather than written
Example
The teenagers used slang that their parents couldn't understand.
青少年使用了父母无法理解的俚语。
C1 noun, verb /səˈpiːnə/

subpoena

传票
Meaning
a legal document ordering someone to attend court; to summon someone with such a document
Example
The witness received a subpoena to appear in court next week.
证人收到了传票，要求下周出庭。
B2 verb /stɪŋ/

sting

刺痛
Meaning
to pierce with a sharp point; to cause sharp pain
Example
The bee stung him on his arm while he was gardening.
蜜蜂在他园艺时刺伤了他的手臂。
B2 verb /sɑːb/

sob

大声哭泣
Meaning
to cry noisily while taking short breaths
Example
She began to sob uncontrollably after hearing the news.
她在听到消息后开始无法控制地呜咽。
B1 noun /ˈseɪ.lər/

Sailor

水手
Meaning
a person who works on a ship or boat; a member of a navy
Example
The experienced sailor navigated the ship through the storm.
经验丰富的水手驾船穿越风暴。
B2 noun ˌspɛk.jʊˈleɪ.ʃən

speculation

投机
Meaning
Investment in stocks, property, or other ventures in the hope of gain but with the risk of loss.
Example
Stock market speculation can lead to high volatility.
股市投机可能导致高波动性。
B2 noun /ˈspɒnsəʃɪp/

sponsorship

赞助
Meaning
the act of supporting an event, activity, person, or organization financially or through other resources
Example
The event was made possible due to the sponsorship of several big companies.
由于几家大公司的赞助，活动得以举行。
C1 noun/verb /ˈsuː.tʃər/

suture

缝合
Meaning
A stitch or row of stitches holding together the edges of a wound or surgical incision.
Example
The doctor used a suture to close the wound.
医生使用了缝合线来闭合伤口。
C1 adjective ˈsɛd(ə)ntəri

sedentary

久坐的
Meaning
Characterized by much sitting and little physical activity.
Example
A sedentary lifestyle can lead to numerous health problems.
久坐的生活方式可能导致多种健康问题。
C2 noun /sɪˈmɪlɪtjuːd/

Similitude

相似; 类似
Meaning
the quality or state of being similar; resemblance
Example
The similitude between the two paintings suggested they were by the same artist.
这两幅画之间的相似性表明它们是由同一位艺术家创作的。
B1 adjective ˈsteɪbl

stable

稳定
Meaning
Not likely to change or fail; firmly established.
Example
Strong nuclear force keeps the nucleus stable.
强大的核力保持着原子核的稳定。
B2 noun (plural) /skræps/

scraps

剩菜
Meaning
Small pieces left over from something; also small fights or quarrels.
Example
The dog ate the scraps from the table.
狗吃了桌子上的剩菜。
C1 noun /səbˈmɜːrdʒəns/

submergence

沉没
Meaning
the act or process of being submerged or going underwater
Example
The submergence of coastal areas is a major concern due to rising sea levels.
由于海平面上升，沿海地区的沉没成为一个重大问题。
C1 verb /sərˈmaɪz/

surmise

推测
Meaning
to suppose something is true without having evidence
Example
She surmised that he was not coming to the meeting.
她推测他不会来参加会议。
A2 adjective /ˈsuːpər/

super

超级
Meaning
excellent; very good
Example
She did a super job on the project.
她在项目中做得非常好。
C1 verb/noun /ˈswæɡ.ər/

swagger

傲慢
Meaning
To walk or behave in a very confident and arrogant way.
Example
He swaggered into the room as if he owned the place.
他走进房间，好像他是这个地方的主人。
A2 noun /sɛlf/

self

自我
Meaning
a person's essential being that distinguishes them from others, especially considered as the object of introspection or reflexive action
Example
She has a strong sense of self.
她有强烈的自我意识。
B2 verb /swiːp/

sweep

打扫
Meaning
to clean by brushing; to move quickly and smoothly
Example
She sweeps the floor every morning.
她每天早上打扫地板。
B2 verb /spɪn/

spin

旋转
Meaning
To turn around quickly or cause something to rotate
Example
The dancer began to spin gracefully on the stage.
舞者开始在舞台上优雅地旋转。
C2 verb /ˈsʌli/

sully

玷污
Meaning
to damage the purity, integrity, or reputation of something
Example
The scandal sullied the politician’s reputation.
丑闻玷污了政治家的声誉。
C1 noun /ˈsɜːrtʃɑːrdʒ/

surcharge

附加费
Meaning
an additional charge or payment added to the usual cost
Example
The airline ticket had a fuel surcharge added to it.
机票上加收了燃油附加费。
C1 adjective /ˈsʌn.dri/

sundry

杂项
Meaning
Various or miscellaneous.
Example
The shop sells fruits, clothes, and sundry items.
这家店卖水果、衣服和各种商品。
A1 noun /skaɪ/

Sky

天空
Meaning
the region of the atmosphere and outer space seen from the earth
Example
The sky is blue today.
今天的天空是蓝色的。
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。
B2 verb /skeər/

scare

恐吓
Meaning
to frighten someone or make them feel afraid
Example
The loud noise scared the baby.
大声的噪音把婴儿吓坏了。
B2 adjective /ˈstɑːrtəld/

startled

吃惊
Meaning
suddenly shocked or surprised by something unexpected
Example
She was startled by the loud noise outside.
她因外面的巨大声音而感到吃惊。
C2 noun /sɜːrˈsiːs/

surcease

停止
Meaning
a temporary or final ending or stopping of something
Example
The noise finally came to a surcease after midnight.
噪音在午夜后终于停止了。
B2 adverb /ˈsoʊlli/

solely

仅仅
Meaning
only; not involving anyone or anything else
Example
He is solely responsible for the decision.
他完全对这个决定负责。
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。
C2 verb /ˈsʌpjʊˌreɪt/

suppurate

化脓
Meaning
to form or discharge pus, usually as a result of infection
Example
The wound began to suppurate after a few days.
伤口在几天后开始脓液化。
C2 verb /səbˈsjuːm/

subsume

包括
Meaning
To include or absorb something into a larger group or category.
Example
Minor details were subsumed under the main topic.
次要细节被纳入了主要话题。
C2 adjective /səˈlɪsɪtəs/

solicitous

关心
Meaning
showing concern or care for someone's health, happiness, or comfort
Example
She was always solicitous about the well-being of her students.
她总是关心学生们的福祉。
B2 verb /ʃɛd/

shed

掉落
Meaning
to let something fall off naturally, such as leaves, hair, or tears
Example
Trees shed their leaves in autumn.
树木在秋天落叶。
B2 adjective /ˈskeptɪkəl/

Sceptical

怀疑的; 不信任的; 对某事的真相持怀疑态度
Meaning
having doubts; not easily convinced; questioning the truth of something
Example
Many scientists remain sceptical about the new theory.
许多科学家对新理论持怀疑态度。
C1 noun /ˈsɔːrsəri/

sorcery

巫术
Meaning
the use of magical powers, especially through spells and enchantments
Example
The villagers believed the illness was caused by sorcery.
村民们相信疾病是由巫术引起的。
C1 noun /ˈstreɪnər/

Strainer

筛子
Meaning
a device having holes punched in it or made of crossed wires for separating solid matter from a liquid
Example
Use a strainer to drain the pasta water.
使用筛子把意大利面水倒掉。
C1 noun /ˈstrɑːtəm/

stratum

层
Meaning
a layer or level of material, or a social class in society
Example
The upper stratum of society enjoyed privileges not available to others.
社会上层享有其他人无法获得的特权。
A2 adjective /ˈsʌn.i/

Sunny

阳光明媚的; 乐观的
Meaning
bright with sunlight; cheerful and optimistic
Example
It's a beautiful sunny day perfect for a picnic.
这是一个美丽的阳光明媚的日子，适合野餐。
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。
A1 noun /ˈsɪstər/

sister

姐姐 / 妹妹
Meaning
a female sibling; a girl or woman in relation to other children of her parents
Example
My sister is coming to visit us next week.
我姐姐下周要来看我们。
A1 noun /siː/

Sea

海洋
Meaning
a large body of salt water that covers most of the earth's surface
Example
We went swimming in the sea.
我们去海里游泳。
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。
A2 noun/verb /ˈsiːzən/

season

季节 / 调味
Meaning
One of the four periods of the year characterized by specific weather conditions; also, to add flavor to food.
Example
Spring is my favorite season of the year.
春天是我最喜欢的季节。
B2 verb /səbˈskraɪb/

subscribe

订阅
Meaning
to pay to receive a service regularly; to agree with or support something
Example
I subscribe to several online magazines.
我订阅了几本在线杂志。
A2 noun /spɒt/

spot

地点
Meaning
a particular place or position
Example
I found a great spot for a picnic in the park.
我在公园里找到了一个很好的野餐地点。
B1 verb /spɔɪl/

spoil

破坏
Meaning
to damage or ruin something
Example
The rain spoiled the outdoor event.
雨水破坏了户外活动。
C2 noun /ˈsætræp/

satrap

总督
Meaning
a governor of a province in ancient Persia; also used figuratively for a subordinate ruler
Example
The king appointed a satrap to oversee the distant province.
国王任命了一个总督来管理遥远的省份。
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。
A2 noun /staɪl/

Style

风格
Meaning
a particular way of doing something; a distinctive appearance or manner of expression
Example
She has her own unique style of writing that captivates readers.
她有自己独特的写作风格，吸引了读者。
A1 adjective /ʃʊr/

Sure

确定的; 确实
Meaning
completely confident that something is true; certain; definitely true
Example
I am sure that he will come tomorrow.
我确定他明天会来。
C2 noun /səbˈdʌk.ʃən/

subduction

地壳的一个层次向下移动，进入下方的地幔。
Meaning
The lateral and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Example
The Pacific Ring of Fire is an area of intense subduction.
太平洋火环是一个强烈的俯冲区域。
B1 noun /stoʊv/

Stove

炉子
Meaning
a kitchen appliance used for cooking food by applying heat
Example
She cooked dinner on the gas stove.
她在煤气炉上做晚餐。
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 verb /ˈslækən/

slacken

放松
Meaning
to make or become less tight, less active, or slower
Example
The driver slackened his speed as he approached the village.
司机在接近村庄时放慢了速度。
A2 noun /ˈstjuːdiəʊ/

studio

工作室
Meaning
a room where an artist, photographer, musician, or broadcaster works
Example
The singer recorded her new song in the studio.
歌手在工作室录制了她的新歌。
B2 verb /ˈstʌmbəl/

stumble

绊倒
Meaning
to trip or lose balance while walking or running; to make a mistake or falter
Example
He stumbled on the uneven pavement.
他在人行道上绊倒了。
B2 noun /ˈsuːpəvaɪzə(r)/

supervisor

监督员
Meaning
a person who manages or directs the work of others
Example
The supervisor checked the progress of each employee.
主管检查了每个员工的进展。
B2 adjective /sɪmˈbɒlɪk/

symbolic

象征性的
Meaning
serving as a symbol or representing something else
Example
The dove is symbolic of peace and freedom.
鸽子是和平与自由的象征。
C2 verb /ʃʌk/

shuck

剥壳
Meaning
To remove the outer covering, such as the husk of corn or shell of shellfish.
Example
She learned how to shuck oysters quickly.
她学会了如何快速打开牡蛎。
A1 noun /ʃɜːrt/

Shirt

衬衫
Meaning
a piece of clothing worn on the upper body with sleeves and buttons
Example
He wore a white shirt to the office.
他穿了一件白衬衫去办公室。
B2 noun /ˈsɪnˌdroʊm/

syndrome

综合症
Meaning
a group of symptoms that occur together and characterize a condition or disease
Example
Down syndrome affects a person's physical and mental development.
唐氏综合症影响一个人的身体和智力发展。
A2 noun /stʌf/

stuff

东西
Meaning
a collection of things or materials, typically unspecified or uncountable
Example
She packed all her stuff into the suitcase.
她把所有的东西都装进了行李箱。
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 noun ˈsɪnədʒi

synergy

协同作用, 合作
Meaning
The interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects.
Example
The synergy between the two companies led to a successful partnership.
这两家公司之间的协同作用促成了成功的合作关系。
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 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。
C1 noun /ˈsɪstərhʊd/

sisterhood

姐妹情谊
Meaning
The relationship between sisters, or a community of women united by shared experiences or goals.
Example
The feminist movement created a strong sense of sisterhood among women.
女权主义运动在女性中创造了强烈的姐妹情谊感。
A2 noun /ˈsɪl.vər/

Silver

银
Meaning
a shiny white precious metal used for making jewelry and ornaments
Example
The silver ring sparkled in the sunlight.
银戒指在阳光下闪闪发光。
B2 verb /səˈluːt/

salute

敬礼
Meaning
to greet with respect; to honor
Example
The soldiers saluted their commanding officer.
士兵们向他们的指挥官敬礼。
B2 noun sɛlf rɪˈlaɪ.əns

self-reliance

自给自足
Meaning
Reliance on one's own powers and resources rather than those of others; independence.
Example
Self-reliance helps build confidence.
自给自足帮助建立自信。
B2 adjective /ˈstʌb.ərn/

Stubborn

固执; 顽固; 倔强
Meaning
refusing to change opinion or course of action; persistent; obstinate
Example
The stubborn child refused to eat his vegetables.
那个固执的孩子拒绝吃蔬菜。
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 noun /sɪv/

sieve

筛子
Meaning
a utensil with a mesh or perforated bottom, used for straining or sifting
Example
She used a sieve to strain the pasta.
她用筛子过滤意大利面。
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。
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。
C2 adjective /ˈsed.j ə.l ə s/

Sedulous

勤奋的; 努力的;
Meaning
showing dedication and diligence; persistent and careful in work
Example
She was sedulous in her research, spending hours in the library every day.
她在研究中非常勤奋，每天都在图书馆度过数小时。
C2 noun /ˈskɔːrpiən fɪʃ/

Scorpion fish

蝎子鱼
Meaning
a type of fish with venomous spines that belongs to the family Scorpaenidae
Example
The scorpion fish has dangerous spines that can inject venom.
蝎子鱼有危险的刺，可以注入毒液。
B2 noun /ˈsɛktər/

sector

行业
Meaning
a distinct part or area of an economy, society, or industry
Example
The technology sector is growing rapidly.
科技行业正在迅速发展。
C1 verb /ˈsʌkɪŋ/

sucking

吮吸
Meaning
Drawing in a liquid, air, or other substance through the mouth or a tube by creating a vacuum; also used figuratively for something unpleasant or ineffective
Example
The baby is sucking on a pacifier.
婴儿正在吮吸安抚奶嘴。