Seldom
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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。
C2 noun /ˈspɛndˌθrɪft/

spendthrift

挥霍者
Meaning
A person who spends money extravagantly or wastefully.
Example
The young prince was known as a spendthrift, wasting his fortune on lavish parties.
年轻的王子被称为挥霍者，浪费他的钱财在奢华的派对上。
B2 adjective /ˈsɪtʃueɪtɪd/

situated

位于
Meaning
located in a particular place or position
Example
The hotel is situated near the beach.
酒店位于海滩附近。
C1 noun /ʃraɪn/

Shrine

圣地; 神殿; 圣坛
Meaning
a holy or sacred place dedicated to a specific deity, ancestor, hero, or saint
Example
Pilgrims visit the shrine to pray for good health.
朝圣者前往圣地为健康祈祷。
B1 adjective /ˌstreɪt ˈfɔːr.wərd/

Straight forward

诚实直率; 不复杂; 容易理解
Meaning
honest and open; not complicated; easy to understand
Example
His explanation was very straightforward and easy to follow.
他的解释非常直白，并且易于理解。
B1 adjective /səˈpəʊzd/

supposed

假定的
Meaning
generally believed or assumed, but not necessarily true
Example
This is the supposed solution to the problem.
这是问题的假定解决方案。
B2 verb /stroʊk/

stroke

抚摸
Meaning
to move your hand gently over something; to hit or touch something gently
Example
She stroked the cat's fur gently.
她轻轻地抚摸着猫的毛发。
C2 adjective /ˈsiːmi/

seamy

堕落的，肮脏的
Meaning
Morally degraded, unpleasant, or sordid.
Example
The novel reveals the seamy side of city life.
这本小说揭示了城市生活的肮脏一面。
B2 noun ˈsəʊ.ʃəl ˈdʒʌs.tɪs

social justice

社会正义
Meaning
Justice in terms of the distribution of wealth, opportunities, and privileges within a society.
Example
Social justice ensures equality of opportunity.
社会正义确保平等的机会。
C2 adjective ˌsʌr.əpˈtɪʃ.əs

surreptitious

秘密
Meaning
Kept secret, especially because it would not be approved of; done stealthily.
Example
She took a surreptitious glance at his notes.
她偷偷地看了一眼他的笔记。
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。
B1 adverb /ˈsekəndli/

secondly

其次
Meaning
Used to introduce the second point in a list of arguments or ideas.
Example
Firstly, we need funding; secondly, we need a strong team.
首先，我们需要资金；其次，我们需要一支强大的团队。
C1 verb /sɪndʒ/

singe

轻微燃烧
Meaning
To burn something superficially or lightly, especially at the edges.
Example
The fire singed his eyebrows.
火焰烧焦了他的眉毛。
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 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 verb /ˈstaɪmi/

stymie

妨碍
Meaning
to prevent or hinder the progress of something
Example
The new regulations could stymie small businesses.
新规章可能会阻碍小型企业的发展。
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。
A1 noun /ˈsekənd/

second

Meaning
a unit of time equal to one sixtieth of a minute; also the position after first
Example
He finished the race in second place.
C1 adjective /ˈsaɪt.ləs/

Sightless

盲目; 无视力
Meaning
unable to see; blind; lacking vision
Example
The sightless man navigated the street with his guide dog.
盲人带着他的导盲犬穿过街道。
A1 noun /ˈʃʊɡər/

Sugar

糖
Meaning
sweet crystalline substance used as a sweetener
Example
Please add two teaspoons of sugar to my coffee.
请在我的咖啡里加两茶匙糖。
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。
B2 noun /səˈspens/

Suspense

悬念
Meaning
a feeling of excited or anxious uncertainty about what will happen
Example
The movie kept us in suspense until the very end.
电影让我们一直处于悬念中，直到最后。
C1 noun ˈsɛlf pəˈzɪʃən

self-possession

自控力
Meaning
The quality of being calm and confident and in control of one's emotions; composure.
Example
His self-possession during the crisis was remarkable.
他在危机中的自控力令人钦佩。
C2 adjective /ˌstætʃuˈɛsk/

statuesque

雕像般的
Meaning
Having the grace, beauty, or dignity of a statue; tall and attractively proportioned.
Example
She had a statuesque figure that turned heads wherever she went.
她有着雕像般的身形，每走到哪里都会吸引视线。
B1 noun /ˌsaʊθˈwɛst/

southwest

西南
Meaning
the direction that is between south and west; a region in that direction
Example
They traveled to the southwest of the country for their vacation.
他们去国家的西南部度假。
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。
A1 noun /saɪd/

side

旁边
Meaning
a position to the left or right of something
Example
The store is on the side of the road.
商店位于路的旁边。
B1 noun /ˈsoʊ.lər ˌsɪs.təm/

Solar system

太阳系
Meaning
the sun and all the planets, moons, asteroids and other objects that orbit around it
Example
Our solar system has eight planets orbiting the sun.
我们的太阳系有八个行星围绕太阳旋转。
C1 verb /ˈsætʃəˌreɪt/

saturate

Meaning
to fill completely with something until no more can be absorbed
Example
The heavy rain saturated the ground within minutes.
B2 noun /səkˈsɛʃ.ən/

succession

生态演替
Meaning
The process of ecological change in which one community of organisms is gradually replaced by another.
Example
Forest succession occurs when old ecosystems are replaced by new ones.
森林演替发生在旧的生态系统被新的生态系统取代时。
B2 noun /skwɒd/

squad

小队
Meaning
a small group of people organized for a specific purpose or task, often in the military or sports
Example
The football squad trained hard before the championship match.
足球队在冠军赛前进行了艰苦训练。
C1 noun /stents/

stents

支架
Meaning
Small mesh tubes used to treat narrow or blocked arteries.
Example
Stents were successfully placed using robotic techniques.
支架通过机器人技术成功放置。
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。
B1 adjective /sɪnˈsɪər/

Sincere

真诚的; 真实的; 无做作
Meaning
honest and genuine in expressing feelings; free from pretense or deceit
Example
She gave me a sincere apology for her mistake.
她为自己的错误真诚地道歉。
A2 noun, verb /ʃɒt/

shot

射击
Meaning
a single attempt to hit something, usually with a weapon or a ball
Example
He took a shot at the goal.
他朝着球门射击。
A2 adjective /ˈsaɪ.lənt/

Silent

安静的; 沉默的; 平静的
Meaning
making no sound; quiet; not speaking
Example
The library was completely silent during study hours.
在学习时间，图书馆是完全安静的。
B1 adjective /səˈfɪʃənt/

Sufficient

足够的; 适合目的的; 满意的
Meaning
enough; adequate for the purpose; satisfactory
Example
We have sufficient time to complete the project.
我们有足够的时间来完成这个项目。
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。
B2 noun, verb /striːk/

streak

条纹或线；快速移动至指定方向
Meaning
a long, thin line or mark; to move very quickly in a specified direction
Example
Lightning streaked across the night sky.
闪电划过夜空。
B1 noun /ˈspɛndɪŋ/

spending

Meaning
the act of paying money for goods or services
Example
Her spending on clothes was higher than expected.
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。
B2 verb /spɛər/

spare

额外给予 / 节省
Meaning
To give something that one has extra of; to refrain from harming or killing.
Example
Could you spare me a few minutes of your time?
你能给我一些你的时间吗？
B2 adjective /ˈsændi/

Sandy

沙的; 沙质的
Meaning
covered with sand; containing sand; having the texture of sand
Example
The sandy beach stretched for miles along the coast.
沙滩沿海岸延伸了几英里。
B2 adverb /səˈfɪʃəntli/

sufficiently

充分
Meaning
to an adequate degree or extent
Example
She studied sufficiently to pass the exam.
她足够努力地学习，才能通过考试。
B1 noun səˈplaɪ

supply

供应。供给。
Meaning
A stock or amount of something supplied or available for use.
Example
Supply chains ensure resource availability.
供应链确保资源的可用性。
B2 adjective /sɔːr/

sore

酸痛
Meaning
painful or aching, usually in a specific part of the body
Example
After the long run, my legs were sore.
长跑后，我的腿很酸痛。
C2 adjective /ˈsɒmnələnt/

somnolent

昏昏欲睡
Meaning
Sleepy or drowsy; causing a desire to sleep.
Example
The somnolent lecture made half the class fall asleep.
那堂昏昏欲睡的讲座让一半的班级都睡着了。
C1 noun ˈsʌb.tɛkst

subtext

潜台词
Meaning
Hidden meaning or message behind spoken or written words
Example
The subtext of his speech suggested disagreement.
他的演讲的潜台词暗示着不同意见。
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 /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。
B1 noun /ˈsʌn.laɪt/

sunlight

阳光
Meaning
Direct light from the sun.
Example
Sunlight does not reach the abyssal depths of the ocean.
阳光无法到达海洋的深渊。
C1 noun ˌsɛlf.rɪˈstreɪnt

self-restraint

自我克制
Meaning
The practice of restraining oneself from indulging in something, typically an impulse or desire.
Example
Practicing self-restraint helps in avoiding impulsive decisions.
实践自我克制有助于避免冲动的决策。
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 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。
C1 verb /slɪŋ/

sling

投掷, 挂起
Meaning
to throw or hang something roughly or carelessly
Example
He slung his bag over his shoulder before leaving.
他在离开前把包扔在肩膀上。
B2 noun /slʌm/

Slum

贫民窟
Meaning
a poor urban area with substandard housing and squalid conditions
Example
The government is working to improve conditions in the slum.
政府正在努力改善贫民区的条件。
B1 verb /splɪt/

split

分割
Meaning
to divide or separate into parts or groups
Example
He split the log in two with an axe.
他用斧子把木头劈成两半。
C2 noun /ˈslʌɡərd/

sluggard

懒汉
Meaning
A lazy, sluggish person.
Example
The sluggard refused to get out of bed even at noon.
懒汉拒绝在中午起床。
B2 noun /ˈsætaɪər/

satire

讽刺
Meaning
The use of humor, irony, or exaggeration to criticize people's stupidity or vices.
Example
The play was a brilliant satire on modern politics.
这出戏是对现代政治的精彩讽刺。
B2 noun /ˈsɛnət/

senate

参议院
Meaning
a legislative or governing body, typically the upper chamber in a bicameral legislature
Example
The senate voted in favor of the new healthcare bill.
参议院投票支持新的医疗保健法案。
C1 verb /snɪp/

snip

剪切
Meaning
to cut something quickly with scissors or a sharp tool
Example
She snipped the loose thread from her dress.
她剪下了裙子上松散的线。
B2 noun ˈsɛv.ən ˈwʌn.dərz

Seven Wonders

世界七大奇迹
Meaning
The seven most remarkable and famous structures in the world, representing architectural feats and cultural significance.
Example
The Seven Wonders of the world reflect human brilliance.
世界七大奇迹反映了人类的辉煌。
B2 noun /ˈʃepərd/

Shepherd

牧羊人
Meaning
a person who tends and guards sheep
Example
The shepherd guided his flock to the green pasture.
牧羊人把他的羊群引导到绿色的牧场。
C2 adjective /stəˈkɑː.təʊ/

staccato

断奏
Meaning
short and detached in sound or style, often used in music
Example
The pianist played the notes in a staccato rhythm.
钢琴家以断奏的节奏弹奏音符。
C1 noun /slæb/

slab

板
Meaning
a large, thick, flat piece of stone, concrete, or other hard material
Example
The workers laid a concrete slab for the foundation.
工人们为地基铺设了一块混凝土板。
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。
B2 verb /səʊ/

sew

幸福
Meaning
to join pieces of fabric or material together using a needle and thread
Example
She learned to sew her own clothes at an early age.
她在获得奖项时无法掩饰她的快乐。
B1 adjective /ˈsplendɪd/

Splendid

壮丽的; 极好的; 印象深刻的
Meaning
magnificent; excellent; very impressive
Example
The castle looked splendid in the sunset.
城堡在日落时看起来很壮丽。
A1 pronoun /ˈsʌmwʌn/

someone

某人
Meaning
a person, but not specifically known or named
Example
Someone left their umbrella in the hallway.
某人把他们的伞忘在了走廊里。
C2 adjective /ˈsiːmli/

seemly

得体
Meaning
proper or appropriate in behavior or appearance
Example
It was not seemly to argue loudly during the ceremony.
在仪式期间大声争论是不合适的。
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 verb /səˈkʌm/

succumb

Meaning
To give in to pressure, temptation, or illness; to yield or fail to resist.
Example
He finally succumbed to his illness after a long struggle.
C1 verb /səbˈmɜːrdʒ/

submerge

淹没
Meaning
to put under water or cover with liquid
Example
The floodwaters threatened to submerge the village.
洪水威胁要淹没整个村庄。
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。
C2 verb /ˌsuːpərˈæd/

superadd

超级添加
Meaning
to add something to what has already been added
Example
The author chose to superadd a new chapter to the revised edition.
作者决定在修订版中超级添加一个新章节。
C1 noun /ˈskælpəl/

scalpel

手术刀
Meaning
A small and extremely sharp bladed instrument used for surgery and dissection.
Example
The surgeon carefully used a scalpel to make the first incision.
外科医生小心地使用手术刀进行第一次切割。
C1 adjective /ˈspel.baʊnd/

Spellbound

着迷的; 迷住的
Meaning
completely fascinated and unable to move or think about anything else; enchanted
Example
The children sat spellbound as the magician performed his tricks.
孩子们看到魔术师表演时都目瞪口呆。
A2 adjective /ˈsɪmələr/

Similar

相似的; 具有共同特点的
Meaning
alike; having characteristics in common
Example
The two sisters have similar interests in music.
这两姐妹在音乐方面有相似的兴趣。
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。
C2 adjective /ˈsætərˌnaɪn/

saturnine

忧郁的
Meaning
slow and gloomy in mood
Example
His saturnine expression made everyone in the room uncomfortable.
他的忧郁表情让房间里的人都感到不舒服。
B2 noun /ˈspætʃ.ʊ.lə/

Spatula

刮刀
Meaning
a kitchen utensil with a flat, flexible blade used for mixing, spreading, or lifting food
Example
I used a spatula to flip the pancakes in the pan.
我用刮刀翻转平底锅里的煎饼。
C1 adjective /stɔːntʃ/

staunch

坚定的, 忠诚的
Meaning
Loyal, committed, and firm in support.
Example
She is a staunch supporter of environmental protection.
她是环境保护的坚定支持者。
C2 verb /stɑːntʃ/

stanch

止血
Meaning
to stop the flow of blood or liquid from a wound or source
Example
The nurse quickly stanched the bleeding from the cut.
护士迅速止住了切口处的出血。
C2 adjective /ˌsæpəˈneɪʃəs/

saponaceous

含肥皂性质的
Meaning
Soapy or having the qualities of soap.
Example
The plant has saponaceous leaves that produce foam when rubbed in water.
这种植物有含肥皂性质的叶子，擦在水中时会产生泡沫。
B1 verb /ˈstɒpɪŋ/

stopping

停止
Meaning
Coming to a halt or pause.
Example
The ship is stopping at the Falkland Islands.
船只正在福克兰群岛停靠。
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。
B2 noun /ˈsɛntəmənt/

Sentiment

情感
Meaning
a feeling or opinion, especially one based on emotion; tender feelings of affection
Example
Public sentiment was strongly against the new policy.
公众舆论强烈反对这项新政策。
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。
C1 noun stɔːrm ɪnˌtensɪfɪˈkeɪʃən

storm intensification

风暴加强
Meaning
The process by which storms become stronger and more severe in intensity.
Example
Storm intensification is linked to climate change.
风暴加强与气候变化有关。
C1 noun /ˈstændˌstɪl/

standstill

停滞
Meaning
a situation in which all movement or activity stops
Example
The traffic came to a standstill after the accident.
事故发生后，交通陷入了停滞。
C1 adjective /səbˈmɪs.ɪv/

Submissive

顺从; 听话; 顺从的
Meaning
ready to obey others; yielding to authority; humble and compliant
Example
She became submissive after years of harsh treatment.
她在多年的严厉对待后变得顺从。
C2 adverb /ˌsʌb ˈroʊzə/

sub rosa

秘密地
Meaning
secretly, in confidence, or in private
Example
The deal was made sub rosa to avoid public scrutiny.
交易是在秘密地进行的，以避免公众审查。
A2 noun /skɪn/

Skin

皮肤
Meaning
the outer covering of the body; the natural outer covering of a fruit or vegetable
Example
Her skin was soft and smooth.
她的皮肤又软又滑。
C2 verb /ˌsuːpərˈhiːt/

superheat

过热
Meaning
to heat a substance beyond its normal boiling point without it becoming vapor
Example
Engineers superheat the steam to increase the efficiency of the turbine.
工程师将蒸汽超热以提高涡轮机的效率。
C1 noun /ʃæk/

Shack

小屋
Meaning
a small, crudely built dwelling; a poorly constructed building
Example
The fisherman lived in a small shack near the beach.
渔夫住在靠近海滩的小屋里。
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

半年一次
Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
公司每六个月举行一次会议。
B2 noun /ˈsɪɡ.nə.tʃər/

Signature

签名
Meaning
a person's name written in their own handwriting as identification or authorization
Example
Please put your signature at the bottom of the document.
请在文件底部签名。
A2 verb /smel/

smell

闻
Meaning
to perceive odor through the nose; to have an odor
Example
The flowers smell sweet.
花儿闻起来甜美。
A1 noun /snoʊ/

Snow

幸福
Meaning
white frozen water that falls from clouds as soft flakes
Example
The children played happily in the fresh snow.
孩子们在新鲜的雪地上开心地玩耍。
C2 adjective /ˈstɪdʒiən/

stygian

阴暗
Meaning
extremely dark, gloomy, or forbidding
Example
They walked through the stygian cave with torches.
他们拿着火把走过了阴暗的洞。
A1 noun /sɔːŋ/

song

歌曲
Meaning
a short piece of music with words that are sung
Example
She sang a beautiful song at the concert.
她在音乐会上唱了一首美丽的歌曲。
B2 verb /spɪl/

spill

洒
Meaning
to cause liquid to flow or fall out of a container by accident
Example
Be careful not to spill your coffee.
小心不要洒出你的咖啡。
B2 adjective /ˈstʌnɪŋ/

stunning

令人惊叹
Meaning
extremely impressive or attractive
Example
The view from the top of the mountain was absolutely stunning.
从山顶看到的景色简直令人惊叹。
B2 adjective /ˈsæv.ɪdʒ/

Savage

野蛮的; 残忍的; 未开化的
Meaning
extremely cruel or violent; wild and fierce; uncivilized
Example
The savage attack shocked everyone.
野蛮的攻击震惊了所有人。
B2 noun /ˈsʌm.ɪt/

summit

高峰会议
Meaning
A high-level meeting between leaders, especially of governments; a conference.
Example
The summit addressed pressing global issues.
高峰会议讨论了紧迫的全球问题。
B2 verb /ˈstræŋɡəl/

strangle

Meaning
to kill or stop someone or something by squeezing the throat or restricting flow
Example
The villain tried to strangle his opponent in the dark alley.
C2 adjective /ˈstɜːr.tər.əs/

stertorous

重呼吸声
Meaning
Characterized by heavy snoring or breathing.
Example
The patient’s stertorous breathing alarmed the nurses.
病人的重呼吸声让护士们感到惊讶。
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 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。
C2 adjective /sɒmˈnɪfərəs/

somniferous

催眠的
Meaning
Tending to induce sleep; soporific.
Example
The professor's somniferous lecture put half the class to sleep.
教授的催眠讲座让一半的学生睡着了。
B2 verb /ˈspɛsɪfaɪ/

specify

指定
Meaning
to state or describe something clearly and exactly
Example
Please specify the time and place of the meeting.
请明确指定会议的时间和地点。
C1 noun /ˈsɪk.əl/

Sickle

镰刀
Meaning
a tool with a curved metal blade and short handle used for cutting grain crops
Example
The farmer harvested wheat using a traditional sickle.
农民用传统的镰刀收割小麦。
C1 adjective /ˈsliːzi/

sleazy

低级的, 肮脏的, 或质量差的
Meaning
morally low, dirty, or cheap in quality
Example
He avoided the sleazy nightclub downtown.
他避免了市中心的低级夜店。
C1 adjective, verb /sɪˈdeɪt/

sedate

镇静
Meaning
calm, quiet, and composed; or to administer a drug to make someone calm or sleep
Example
The nurse sedated the patient before the operation.
护士在手术前给病人注射了镇静剂。
B2 adjective /ˈsɛksi/

sexy

性感的
Meaning
sexually attractive or exciting
Example
She wore a sexy red dress to the party.
她穿着一条性感的红色连衣裙去参加派对。
B2 verb /ˈsʌfəkeɪt/

suffocate

Meaning
to cause someone to die or have difficulty breathing by depriving them of air
Example
The child nearly suffocated when trapped in the locked room.
B1 noun /swɒn/

Swan

天鹅
Meaning
a large waterbird with a long curved neck and usually white plumage
Example
The elegant swan glided silently across the water.
那只优雅的天鹅静静地滑过水面。
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。
A2 adjective /ˈselfɪʃ/

Selfish

自私
Meaning
caring only about oneself rather than others
Example
He was too selfish to share his food with others.
他太自私了，不愿与他人分享他的食物。
A2 noun /ˈsɛlər/

seller

幸福
Meaning
a person who sells something
Example
The seller offered a discount on bulk purchases.
当她收到奖项时，她无法掩饰自己的幸福。
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。