Seriousness
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B2 noun /ˈsɪr.i.əs.nəs/

Seriousness

严肃; 重要
Meaning
the quality of being serious; gravity; importance
Example
The seriousness of the situation became clear when the doctor spoke.
当医生说话时，情况的严肃性变得明显。
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。
C2 noun /ˈstrætədʒəm/

stratagem

计策
Meaning
a plan or scheme designed to achieve a particular goal, often by trickery
Example
The general devised a clever stratagem to outwit the enemy.
将军设计了一个巧妙的计策来智胜敌人。
C1 verb /snɪər/

sneer

嘲笑
Meaning
to smile or speak in a mocking or contemptuous way
Example
She sneered at his attempt to sing.
她嘲笑他的唱歌尝试。
B2 noun /səbˈskrɪp.ʃən/

Subscription

订阅
Meaning
a payment for regular delivery of a service or product; an arrangement to receive something regularly
Example
I canceled my Netflix subscription because I wasn't watching it enough.
我取消了我的Netflix订阅，因为我没有足够看它。
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 verb /stʌk/

stuck

卡住
Meaning
unable to move; fixed in one position; unable to continue
Example
The door is stuck and won't open.
门被卡住了，打不开。
B2 adjective /spɒnˈteɪniəs/

Spontaneous

自发的
Meaning
done without planning; natural and unforced
Example
Their spontaneous dance in the rain was beautiful.
他们在雨中即兴的舞蹈非常美丽。
B2 noun /sfɪər/

sphere

球体
Meaning
a round, three-dimensional shape that is perfectly symmetrical around its center; an area of activity or knowledge
Example
The Earth is almost a perfect sphere.
地球几乎是一个完美的球体。
B1 adverb /səˈpraɪzɪŋli/

surprisingly

令人惊讶地
Meaning
in a way that causes surprise or amazement
Example
Surprisingly, she finished the entire project in just one day.
令人惊讶的是，她在一天之内完成了整个项目。
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 verb /ʃaɪn/

shine

闪耀
Meaning
to give out a bright light or glow
Example
The sun will shine brightly tomorrow.
太阳明天会明亮地照耀。
B1 adjective ˈsen.sɪ.tɪv

sensitive

敏感
Meaning
Quick to detect or respond to slight changes, signals, or influences.
Example
Sensitive systems require precise handling.
敏感的系统需要精确的处理。
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 /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 /ˈsɪməli/

simile

明喻
Meaning
A figure of speech involving the comparison of one thing with another using 'like' or 'as'.
Example
She used a simile to describe her eyes as bright as stars.
她用明喻来描述她的眼睛像星星一样明亮。
B2 adjective /ˈsɪk.li/

Sickly

虚弱; 生病; 苍白
Meaning
weak and unhealthy; prone to illness; appearing weak or pale
Example
The sickly child needed extra care and attention.
这个虚弱的孩子需要额外的照顾和关注。
C2 adjective, adverb /ˈsaɪdlɔːŋ/

sidelong

斜视
Meaning
Directed to the side; indirect, furtive, or not straightforward.
Example
She gave him a sidelong glance across the room.
她穿过房间投给他一个斜视。
B2 verb /sɜːrdʒ/

surge

激增
Meaning
to move suddenly and powerfully forward or upward
Example
The crowd surged forward when the gates opened.
当大门打开时，人群向前涌动。
C2 noun/verb /ˈsʌkər/

succor

帮助
Meaning
Assistance and support in times of hardship or distress.
Example
The charity provided succor to the flood victims.
慈善机构为洪水受害者提供了帮助。
C2 noun /ˌsɪləbɪˈkeɪʃən/

syllabication

音节划分
Meaning
The division of words into syllables.
Example
Proper syllabication helps in correct pronunciation.
正确的音节划分有助于正确发音。
C2 adjective /sʌbˈlɪŋɡwəl/

sublingual

舌下
Meaning
situated or applied under the tongue
Example
The doctor prescribed a sublingual tablet for faster absorption.
医生为更快的吸收开了舌下药片。
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。
A2 adverb /ˈsɪə.ri.əs.li/

seriously

认真地
Meaning
in a solemn or thoughtful manner
Example
She took the matter very seriously.
她非常认真地对待了这个问题。
C1 noun /ˌsɪmbɪˈəʊsɪs/

symbiosis

共生关系
Meaning
A mutually beneficial relationship between different people or groups.
Example
The symbiosis between the two companies led to mutual growth.
两家公司之间的共生关系导致了共同的增长。
C2 noun /ˈsuːpsɒ̃/

soupcon

少量
Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
她在菜肴中只加了一点香料。
B1 adjective ˈsʌb.mə.riːn

submarine

潜水艇
Meaning
Existing, occurring, or used underwater, especially in relation to vessels or cables.
Example
Submarine cables facilitate international communication.
海底电缆促进了国际通信。
A1 verb /siː/

see

看
Meaning
to perceive with the eyes; to understand; to meet
Example
I can see the mountain from here.
我可以从这里看到山。
B2 noun /spæm/

spam

垃圾邮件
Meaning
unsolicited or unwanted electronic communication, typically in the form of email
Example
My inbox is full of spam emails that I need to delete.
我的收件箱里满是垃圾邮件，我需要删除它们。
B2 noun /ˈskɒlərʃɪp/

scholarship

奖学金
Meaning
an award or grant to support a student's education
Example
She received a scholarship to study abroad.
她获得了一项奖学金，以便出国留学。
B2 noun /ˈsɪnənɪm/

Synonym

同义词
Meaning
a word or phrase that means exactly or nearly the same as another word or phrase in the same language
Example
Happy and joyful are synonyms.
幸福和快乐是同义词。
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。
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。
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。
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 adjective /sɪər/

Sear

枯萎的; 烧焦的; 干枯的
Meaning
withered; dried up; burned or scorched
Example
The sear leaves fell from the trees in autumn.
秋天枯萎的叶子从树上掉下来。
C2 verb /skʌlk/

skulk

Meaning
to move or hide secretly, often because you are planning something bad or are feeling guilty
Example
He tried to skulk in the shadows to avoid being seen.
C1 verb /ˈstriːm.laɪn/

streamline

简化或提高效率
Meaning
To make a process simpler and more efficient.
Example
The company aims to streamline production to reduce costs.
公司旨在简化生产以降低成本。
B2 verb /suː/

sue

起诉
Meaning
to bring a lawsuit against someone in a court of law
Example
She decided to sue the company for damages.
她决定起诉公司要求赔偿。
C1 adjective /ˈstɔːlwərt/

stalwart

坚定, 忠诚
Meaning
Loyal, reliable, and hardworking; strongly built or sturdy.
Example
She has always been a stalwart supporter of the community.
她一直是社区的坚定支持者。
C1 verb /ˈsælvɪdʒ/

salvage

挽救
Meaning
To save something from loss, damage, or destruction.
Example
They managed to salvage some goods from the fire.
他们成功地从火灾中挽救了一些货物。
C1 adjective skiˈmæt.ɪk

Schematic

与图表相关或简短的
Meaning
Presenting some framework or concept briefly
Example
The engineer provided a schematic diagram of the project.
工程师提供了该项目的示意图。
B1 noun /ʃel/

Shell

壳
Meaning
hard outer covering of an animal; explosive projectile for a gun
Example
The artillery fired a shell at the enemy position.
炮兵向敌方阵地发射了一个炮弹。
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。
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。
C2 noun /ˈsuːθˌseɪər/

soothsayer

预言家
Meaning
a person who claims to predict the future
Example
The king consulted a soothsayer before going to war.
国王在出征前咨询了一个算命师。
B2 verb /sʌk/

suck

吸
Meaning
to draw something into the mouth by using the lips and tongue
Example
The baby began to suck her thumb.
婴儿开始吸吮她的拇指。
C1 verb /spɔːn/

spawn

产生
Meaning
to produce or generate, often in large numbers
Example
The video game has spawned many sequels.
这款视频游戏已经产生了许多续集。
B2 noun /ˈswɒl.oʊ/

Swallow

燕子
Meaning
a small migratory bird with long wings and a forked tail
Example
The swallow built its nest under the roof.
燕子在屋顶下筑巢。
C1 adjective səˈblaɪm

sublime

崇高的, 壮丽的, 庄严的
Meaning
Of such excellence, grandeur, or beauty as to inspire great admiration or awe.
Example
The sublime beauty of the mountain landscape took my breath away.
那座山脉的崇高美景让我屏住了呼吸。
B2 verb /ˈsɪmpəθaɪz/

sympathize

同情
Meaning
to feel sorry for someone; to understand and share someone's feelings
Example
I sympathize with your loss.
我同情你的失去。
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。
C1 adjective /spəˈrædɪk/

sporadic

零星
Meaning
Occurring irregularly or in scattered instances rather than continuously.
Example
The region experienced sporadic rain showers throughout the week.
该地区经历了整整一周的零星降雨。
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。
C2 adjective /ˈsæ.loʊ/

sallow

黄色的
Meaning
Of an unhealthy yellow or pale brown color, often referring to skin.
Example
His sallow complexion made him look tired and sickly.
他那黄色的肤色让他看起来既疲惫又生病。
C2 adjective /ˈsɪmiən/

simian

类人猿的
Meaning
Relating to, resembling, or affecting apes or monkeys.
Example
The scientist studied the simian behavior of the chimpanzees.
科学家研究了黑猩猩的类人猿行为。
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。
B1 noun /ˈsɪɡ.nəl/

Signal

信号
Meaning
a gesture, action, or sound that conveys information or instruction
Example
The traffic signal turned red, so we stopped.
交通信号灯变红了，我们停了下来。
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 adjective /ˈsɒl.ɪ.ter.i/

Solitary

孤独; 隔离; 单独
Meaning
alone; without companions; single; isolated
Example
He lived a solitary life in the mountains.
他在山中过着孤独的生活。
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。
B1 noun /ˈskwɪr.əl/

Squirrel

松鼠
Meaning
a small agile tree-dwelling rodent with a long bushy tail
Example
The squirrel gathered nuts for winter.
松鼠为冬天收集坚果。
A1 verb /stænd/

stand

站立
Meaning
to be in an upright position; to tolerate or endure
Example
Please stand up when the teacher enters.
当老师进来时请站起来。
B2 noun /sɜːˈveɪ.ləns/

surveillance

监控
Meaning
Close observation, especially of a suspected spy or criminal; continuous watching of a place, person, or situation.
Example
Government agencies conduct surveillance on cyber threats.
政府机构对网络威胁进行监控。
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。
C2 noun /ʃiːf/

sheaf

麦束
Meaning
a bundle of grain stalks laid lengthwise and tied together after reaping; a bundle of objects tied together
Example
The farmer carried a sheaf of wheat on his shoulder.
农民肩上背着一捆小麦。
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。
C2 noun /ˈsɔː.dər/

Sawder

奉承; 奉承的话
Meaning
flattering or wheedling talk; soft soap
Example
His sawder couldn't convince anyone of his sincerity.
他的奉承无法说服任何人相信他的真诚。
A1 noun /speɪs/

space

空间
Meaning
The dimensions of height, depth, and width within which all things exist and move.
Example
Space exploration expands human knowledge.
太空探索扩展了人类的知识。
B1 noun /ˈstætʃuː/

Statue

一种三维艺术作品，通常由石头、金属或木材制成
Meaning
a three-dimensional work of art, typically made of stone, metal, or wood
Example
The statue of liberty is a famous landmark in New York.
自由女神像是纽约的一个著名地标。
C1 adjective /sɪˈkluːdɪd/

secluded

隐蔽的
Meaning
Placed apart from other people or things; private and quiet.
Example
They spent their vacation in a secluded beach house.
他们在一个隐蔽的海滩小屋度过了假期。
C1 noun ˈstræt.ə.sfɪər

stratosphere

平流层
Meaning
The layer of the earth's atmosphere above the troposphere, extending to about 50 km above the earth's surface.
Example
The stratosphere provides a unique environment.
平流层提供了一个独特的环境。
C2 noun /sɒl/

sol

索尔（音乐音阶的第五个音符）
Meaning
The fifth note of the sol-fa musical scale (do, re, mi, fa, sol, la, ti); also the Latin word for sun
Example
The choir practiced singing the note sol during rehearsal.
合唱团在排练时练习唱索尔音符。
B2 noun /ˈsnoʊ.fɔːl/

Snowfall

降雪
Meaning
the process of snow falling from the sky; the amount of snow that falls
Example
The heavy snowfall blocked all the roads yesterday.
昨天下的大雪封锁了所有的道路。
C1 noun /ˈsɜːrəɡət/

surrogate

代理人
Meaning
A substitute, especially a person deputizing for another in a specific role or office.
Example
The surrogate mother gave birth to the child after carrying it for nine months.
代孕母亲在怀孕九个月后把孩子生下了。
B2 noun /ˈspɛk.tə.kəl/

spectacle

景象
Meaning
An impressive display or performance for viewers.
Example
The fireworks created a breathtaking spectacle in the night sky.
烟花在夜空中创造了一个惊人的景象。
C1 noun /ˌsæbəˈtɜːr/

saboteur

破坏者
Meaning
A person who engages in sabotage.
Example
The saboteur was arrested before he could plant the bomb.
破坏者在放置炸弹之前被逮捕了。
C2 noun /ˈʃʊərəti/

surety

担保人
Meaning
a person who takes responsibility for another's performance of an undertaking, such as appearing in court or paying a debt
Example
The landlord required a surety before renting the apartment.
房东在出租公寓之前要求提供保证人。
B1 adjective /ˈsʌm.wʌt/

Somewhat

有点; 稍微; 适度
Meaning
to some extent; rather; moderately
Example
The movie was somewhat interesting but not great.
这部电影有点有趣，但不太棒。
C2 noun /ˈspɒt.ɪd sneɪk hed/

Spotted snake head

斑点蛇头鱼
Meaning
a type of freshwater fish with spotted markings and an elongated head resembling a snake
Example
The spotted snake head is a popular fish for aquaculture in South Asia.
斑点蛇头鱼是南亚水产养殖中常见的鱼类。
C2 noun /ˈstrɪk.tʃər/

stricture

限制，批评
Meaning
a restriction or limitation; a critical remark
Example
The new law placed a severe stricture on free speech.
新法律对言论自由施加了严格的限制。
B1 adjective ˈʃɔːrt.tɜːrm

short-term

短期的
Meaning
Occurring over or involving a relatively short period of time.
Example
Investing in stocks can yield short-term profits.
投资股票可以带来短期收益。
B2 noun /ˈsɑːrdʒənt/

sergeant

中士
Meaning
A rank of non-commissioned officer in the armed forces or police.
Example
The sergeant gave orders to the soldiers before the mission.
中士在任务前向士兵发出命令。
C2 noun /səˈvɑːnt/

savant

Meaning
a learned person, especially a distinguished scientist or scholar; sometimes used in the phrase ‘savant syndrome’ for someone with exceptional abilities alongside developmental differences
Example
The conference keynote was delivered by a linguistic savant who studies endangered languages.
C1 noun sælˈveɪʃən

salvation

救赎
Meaning
Deliverance from sin and its consequences, believed by Christians to be brought about by faith in Christ.
Example
The story revolves around the theme of salvation.
故事围绕救赎的主题展开。
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。
C2 adjective /ˈsɑːdn/

sodden

湿透的
Meaning
thoroughly soaked or saturated with liquid
Example
His clothes were sodden after the heavy rain.
他的衣服在大雨后湿透了。
C1 adjective /ˈseɪ.li.ənt/

salient

重要的，突出的或显著的
Meaning
Most important, prominent, or noticeable
Example
The report highlighted the salient points of the discussion.
报告突出讨论中的重点。
C1 noun /ˈskwɒlər/

squalor

贫困
Meaning
the state of being extremely dirty and unpleasant, especially due to poverty or neglect
Example
They lived in squalor without basic facilities.
他们在没有基本设施的贫困中生活。
C1 noun/verb /sleɪt/

slate

板岩 / 安排
Meaning
a fine-grained rock used for roofing or writing; to schedule or designate for a task
Example
The meeting is slated for next Monday.
会议定于下周一举行。
C2 noun /ˈsʌplɪkənt/

supplicant

恳求者
Meaning
A person who humbly or earnestly asks for something, usually from a person of authority.
Example
The temple was filled with supplicants seeking blessings.
寺庙里充满了恳求者，寻找祝福。
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。
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。
B2 noun /streɪn/

Strain

压力; 紧张; 疲劳;
Meaning
pressure or tension; excessive demand on strength or resources
Example
Working long hours put a strain on his health.
长时间工作给他的健康带来了压力。
A2 noun /ˈʃaʊər/

shower

Meaning
a brief fall of rain or snow or a device for taking a bath or washing oneself
Example
After the workout, I took a quick shower to refresh myself.
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。
B2 noun /sɛnt/

scent

香气
Meaning
a distinctive smell, especially a pleasant one
Example
The scent of roses filled the garden.
玫瑰的香气充满了花园。
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。
A1 noun/adjective /saʊθ/

south

南方
Meaning
the direction towards the bottom of a map, opposite to north
Example
The sun rises in the east and sets in the south.
太阳从东方升起，西方落下。
C1 noun /ˌsæl.ɪ.naɪˈzeɪ.ʃən/

salinization

盐分增加
Meaning
The process of increasing salt content in soil.
Example
Excessive irrigation can cause salinization of farmland.
过度灌溉可能导致农田盐分增加。
B1 noun /seɪlz/

sales

Meaning
activities related to selling products or services
Example
The company saw a significant increase in sales during the holiday season.
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。
C1 noun /ˈseɪɑːns/

seance

灵媒会议
Meaning
A meeting where people attempt to communicate with the spirits of the dead.
Example
They held a seance to contact their late grandmother.
他们举行了灵媒会议，以联系已故的祖母。
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。
B2 adjective /ˈspiːtʃləs/

speechless

无言
Meaning
Unable to speak because of shock, surprise, or strong emotion.
Example
She was speechless when she received the award.
她获得奖项时无言以对。
A2 verb /skiː/

ski

滑雪
Meaning
to glide over snow on skis
Example
We went skiing in the Alps last winter.
我们去年冬天去了阿尔卑斯滑雪。
B2 noun /steɪn/

Stain

污点; 斑点
Meaning
a colored patch or dirty mark that is difficult to remove; a blemish or damage to reputation
Example
There was a coffee stain on his white shirt.
他的白衬衫上有咖啡渍。
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.
B1 verb /seɪl/

sail

扬帆旅行
Meaning
to travel on water in a boat or ship using sails or by wind power
Example
They sailed across the Atlantic Ocean last summer.
他们去年夏天横渡了大西洋。
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。
B2 adjective /ˈslʌɡ.ɪʃ/

Sluggish

迟缓; 无力; 不活跃
Meaning
slow-moving; lacking energy or alertness; inactive
Example
The old computer became sluggish after running for hours.
那台旧电脑运行了几个小时后变得迟缓。
C1 noun səˈsteɪ.nə.bəl tekˈnɒl.ə.dʒi

sustainable technology

可持续技术
Meaning
Technology designed to meet present needs without compromising future generations' ability to meet their needs.
Example
Sustainable technology ensures a cleaner future.
可持续技术确保更清洁的未来。
C2 adjective /ˌstaʊtˈhɑːrtɪd/

stouthearted

勇敢
Meaning
Brave, determined, and courageous
Example
The stouthearted soldier never gave up.
勇敢的士兵从不放弃。
A2 noun /ˈsɪz.ərz/

Scissors

剪刀
Meaning
a cutting instrument with two sharp blades that are joined and work against each other
Example
She used scissors to cut the paper into small pieces.
她用剪刀把纸剪成小块。
C1 noun /ˈskep.tɪ.sɪ.zəm/

skepticism

怀疑主义, 疑虑
Meaning
A skeptical attitude; doubt as to the truth of something.
Example
His skepticism about new technology often makes him resistant to change.
他对新技术的怀疑主义使他常常抗拒改变。
C1 verb /ˈstɪp.jʊ.leɪt/

stipulate

规定
Meaning
to demand or specify a condition in an agreement or contract
Example
The contract stipulates that payment must be made within 30 days.
合同规定付款必须在30天内完成。
B2 verb /ˈskroʊlɪŋ/

scrolling

滚动
Meaning
Moving through content on a screen by sliding up or down.
Example
Scrolling through feeds wastes a lot of time.
在信息流中滚动浪费了很多时间。
B2 adjective /ˈskætərd/

Scattered

分散的; 散落的;
Meaning
spread widely apart; dispersed; occurring here and there
Example
Scattered showers are expected throughout the day.
预计全天都会有分散的降雨。
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。
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。
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。