sinuous
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C1 adjective /ˈsɪnjuəs/

sinuous

蜿蜒
Meaning
Having many curves, bends, or turns; winding.
Example
The hikers followed a sinuous path through the forest.
徒步旅行者沿着蜿蜒的路径穿过森林。
A2 adjective /sɔft/

Soft

柔软; 温柔; 安静
Meaning
not hard or firm; gentle; quiet; tender
Example
The pillow is very soft and comfortable.
枕头很柔软，且很舒服。
B1 noun /slaɪs/

Slice

切片; 薄片
Meaning
a thin, flat piece cut from something larger
Example
Would you like a slice of pizza?
你想要一片披萨吗?
B2 noun /ˈsoʊlər ɪˈklɪps/

Solar eclipse

日全食
Meaning
an eclipse in which the sun is obscured by the moon passing between it and the earth
Example
The solar eclipse will be visible from our city next month.
下个月我们城市将能看到日全食。
B2 noun /skʌl/

Skull

头骨
Meaning
the bony framework of the head that protects the brain
Example
The doctor examined the skull X-ray carefully.
医生仔细检查了头骨的X光片。
B2 noun ˈʃɔːtkʌmɪŋz

shortcomings

短处
Meaning
A fault or failure to meet a certain standard; deficiencies.
Example
Institutional shortcomings affect student behavior negatively.
制度性短处对学生行为产生了负面影响。
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 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 noun /ˈstəʊ.ɪ.sɪ.zəm/

stoicism

斯多伊主义
Meaning
The endurance of pain or hardship without the display of feelings and without complaint.
Example
His stoicism during hardship was admirable.
他在困境中的斯多伊主义令人钦佩。
B2 noun /spaɪt/

spite

恶意
Meaning
a desire to hurt, annoy, or offend someone
Example
She refused the gift out of spite.
她因为恶意拒绝了礼物。
B2 noun /ˌsɒl.ɪˈdær.ə.ti/

Solidarity

团结
Meaning
unity or agreement of feeling or action among individuals with a common interest
Example
The workers showed solidarity during the strike.
工人在罢工期间表现出团结。
A2 adverb /ˈsʌm.haʊ/

Somehow

不管怎样;
Meaning
in some way; for some reason that is not clear
Example
Somehow, I managed to finish the project on time.
不管怎样，我成功地按时完成了项目。
C2 adjective /suːˈpɜːrnəl/

supernal

天上的
Meaning
Relating to the heavens; celestial or divine.
Example
The painting captured a supernal beauty that felt otherworldly.
这幅画捕捉到了一个天上的美丽，感觉像是另一个世界的。
C1 noun /səbˈvɜːrʒən/

subversion

颠覆
Meaning
the act of trying to destroy or undermine an established system or authority
Example
The government accused the rebels of planning subversion.
政府指控叛军策划颠覆行为。
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。
B1 noun /ˈʃæd.oʊ/

Shadow

阴影
Meaning
a dark area where light is blocked by something; a person's silhouette
Example
The tree cast a long shadow across the garden in the evening.
树在傍晚把一个长长的阴影投射到花园里。
C1 adverb /suːˈpɜːb.li/

Superbly

卓越地
Meaning
in an excellent or outstanding manner
Example
She performed superbly in the dance competition.
她在舞蹈比赛中表现得卓越地。
C2 adjective səˈluː.bri.əs

salubrious

有益健康的
Meaning
Health-giving; healthy; promoting health and well-being.
Example
The mountain air is salubrious and refreshing.
山中的空气有益健康且清新。
C2 noun /stɛp/

steppe

草原
Meaning
A large flat area of unforested grassland, especially in southeastern Europe or Siberia.
Example
The nomads traveled across the vast steppe with their herds.
游牧民族带着他们的牲畜穿越辽阔的草原。
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。
A2 noun /ʃiːt/

sheet

床单
Meaning
a large piece of cloth or paper, typically used to cover or protect something
Example
I need a clean sheet to cover the bed.
我需要一张干净的床单来覆盖床铺。
A2 noun /siːn/

scene

场景
Meaning
a place or setting of an event or activity, or the part of a play or film
Example
The final scene of the movie was very emotional.
电影的最后一场景非常感人。
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 /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。
C2 verb /ˈskærɪfaɪ/

scarify

松土
Meaning
to make shallow cuts or scratches; to loosen the surface of soil
Example
The farmer scarified the soil before planting seeds.
农民在种植种子之前松土。
C1 adjective /ˈskrʌmpʃəs/

scrumptious

美味的
Meaning
extremely tasty or delicious
Example
She baked a scrumptious chocolate cake for the party.
她为派对烤了一个美味的巧克力蛋糕。
B2 noun /ˈʃəʊ.keɪs/

showcase

展示柜，吸引或有利地展示某物
Meaning
A display case or exhibition; to present something in an attractive or favorable way.
Example
The exhibition showcased the artist's best works.
展览展示了艺术家的最佳作品。
B1 noun ˈsɛʃənz

sessions

会议, 会议期, 时段
Meaning
A meeting of an official body, especially a court of law, to conduct its business; a period devoted to a particular activity.
Example
The sessions lasted for three hours.
会议持续了三个小时。
C1 noun səˌfɪs.tɪˈkeɪ.ʃən

sophistication

高度复杂性或精致的程度
Meaning
High level of complexity or refinement.
Example
The sophistication of modern AI technology is remarkable.
现代人工智能技术的复杂性令人惊叹。
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。
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。
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。
B2 adjective /ˈspeɪ.ʃəs/

Spacious

宽敞的；宽阔的
Meaning
having a lot of space; roomy and comfortable
Example
The house has a spacious living room with high ceilings.
这座房子有一个宽敞的客厅，高高的天花板。
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。
A1 verb /set/

set

设置
Meaning
to put or place something in a position; to establish
Example
She set the book on the table.
她把书放在桌子上。
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 /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。
B1 adjective /ˈsoʊ kɔːld/

so-called

Meaning
referred to as or known by a particular name or title, often misleadingly
Example
The so-called expert couldn't answer the question.
B1 noun ˈseʃən

session

会议
Meaning
A meeting of an official body, especially a legislature, council, or court of law, to conduct its business.
Example
The session was held on February 25.
会议于2月25日举行。
A2 adverb /ˈsʌm.weər/

Somewhere

某处
Meaning
in or at some place; in an unspecified location
Example
I left my keys somewhere in the house.
我把钥匙放在屋子里的某处。
B1 noun /sɔɪl/

soil

土壤
Meaning
The upper layer of earth in which plants grow.
Example
The soil in this area is reddish.
这个区域的土壤是红色的。
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。
B2 noun /ˈsaɪrən/

siren

警报器
Meaning
A device that makes a loud prolonged sound as a signal or warning; in mythology, a creature that lures sailors with enchanting songs.
Example
The police car passed with its siren blaring.
警车经过时，警报器发出尖锐的声音。
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。
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。
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。
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。
C1 verb /ˈstaɪfl/

stifle

抑制
Meaning
to prevent or restrain an action, idea, or emotion; to suffocate
Example
She tried to stifle a laugh during the serious meeting.
她试图在严肃的会议中抑制笑声。
B2 adjective /ˈʃeɪm.fəl/

Shameful

可耻的; 不光彩的; 令人尴尬的
Meaning
causing shame; disgraceful; embarrassing
Example
His shameful behavior embarrassed the entire family.
他可耻的行为让整个家庭感到尴尬。
C1 noun/verb /stæmˈpiːd/

stampede

混乱的人群
Meaning
A sudden, uncontrolled rush of people or animals; to cause a mass movement.
Example
The loud noise caused a stampede of the crowd.
嘈杂的声音引起了人群中的一阵奔跑。
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。
B2 noun /ˈsɛsəmi sidz/

Sesame Seeds

芝麻种子
Meaning
small edible seeds from the sesame plant used in cooking and baking
Example
Sprinkle sesame seeds on top of the bread before baking.
在面包上撒上芝麻种子，然后烘烤。
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。
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。
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。
A2 adjective /səkˈsɛsfəl/

Successful

成功的; 富裕的; 胜利的
Meaning
having achieved a desired aim or result; prosperous
Example
She was successful in her career as a doctor.
她在医生的职业生涯中取得了成功。
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。
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。
C1 noun ˈsɛlfləsnɪs

selflessness

无私
Meaning
The quality of being concerned more with the needs of others than with one's own.
Example
Selflessness is a key value for community building.
无私是社区建设中的关键价值。
C2 noun /ˈsaɪz.mə.ɡræf/

seismograph

地震仪
Meaning
An instrument that measures and records details of earthquakes, such as force and duration.
Example
The seismograph detected a strong tremor in the area.
地震仪检测到该地区的强烈震动。
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 noun /ʃɑːrd/

shard

碎片
Meaning
a broken piece of glass, metal, or pottery
Example
He cut his finger on a shard of glass.
他用玻璃碎片割伤了手指。
C1 noun /səbˈdʒɛkʃən/

subjection

征服
Meaning
the act of bringing someone or something under control or domination
Example
The people suffered under the subjection of a cruel ruler.
人民在一个残暴统治者的征服下受苦。
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 /ˈstɔːrhaʊs/

storehouse

仓库
Meaning
A place where goods, supplies, or valuables are stored; a repository
Example
The warehouse acted as a storehouse for all the imported goods.
这个仓库作为所有进口商品的storehouse。
B2 noun /ˈsəʊ.ʃəl.ɪ.zəm/

socialism

社会主义
Meaning
An economic system where the means of production are owned by the state or community.
Example
In socialism, resources are distributed equally among citizens.
在社会主义中，资源在公民之间平等分配。
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 /ˈsɪmptəm/

symptom

症状
Meaning
a sign or indication of something, especially of an illness
Example
Fever is a common symptom of the flu.
发烧是流感的常见症状。
C2 adjective /səˈluːtəˌtɔri/

salutatory

欢迎辞
Meaning
Relating to or expressing a greeting or an address, especially at the beginning of a speech.
Example
She delivered a salutatory address at the graduation ceremony.
她在毕业典礼上发表了欢迎辞。
C1 adjective /spɑːrs/

sparse

稀少
Meaning
thinly scattered or distributed; not dense or abundant
Example
Vegetation was sparse in the desert.
沙漠中的植被稀少。
B2 noun /səˈplaɪə(r)/

supplier

供应商
Meaning
a person or company that provides goods or services
Example
The supplier delivered the products on time.
供应商按时交付了产品。
B2 noun /ˈskaɪˌskreɪpər/

Skyscraper

摩天大楼
Meaning
a very tall building of many stories
Example
The new skyscraper dominates the city's skyline.
这座新的摩天大楼主导着城市的天际线。
C2 adjective /ˌsʌb.əˈkwɒt.ɪk/

subaquatic

水下的
Meaning
Existing, living, or located under water.
Example
Divers explored the subaquatic cave system filled with rare fish.
潜水员探索了充满稀有鱼类的水下洞穴系统。
C1 noun /sɪr/

seer

预言者
Meaning
A person who is supposed to be able to see what will happen in the future; a prophet.
Example
The seer predicted a great change in the kingdom.
预言者预测了王国的重大变化。
C2 adjective /ˈsækərɪn/

saccharine

幸福
Meaning
Excessively sweet or sentimental.
Example
His saccharine smile seemed insincere.
她在获得奖项时无法隐藏她的幸福。
B2 adjective /suːˈpɜːrb/

superb

极好的
Meaning
extremely good; excellent
Example
The hotel provided superb service during our stay.
酒店在我们停留期间提供了极好的服务。
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 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。
C2 verb /ˈsɛreɪt/

serrate

锯齿边缘
Meaning
To make a saw-toothed edge or notched margin.
Example
The craftsman serrated the knife blade for better cutting.
工匠将刀片锯齿化，以提高切割效果。
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 adjective /steɪl/

Stale

陈旧的; 过时的; 不新鲜的
Meaning
no longer fresh; lacking originality or novelty
Example
The bread became stale after sitting out for three days.
面包放了三天后变得陈旧。
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。
C1 noun ˈsʌfrɪdʒ

suffrage

选举权
Meaning
The right to vote in political elections; the principle of political representation.
Example
Universal suffrage was a key demand.
普选权是一个重要的要求。
A2 verb /sɜːrv/

serve

服务
Meaning
to provide service; to work for; to offer food or drink
Example
She serves breakfast at 8 AM every morning.
她每天早上8点提供早餐。
C2 noun /ˈsɒlɪˌsɪzəm/

solecism

语法错误
Meaning
a grammatical mistake in speech or writing; a breach of good manners or etiquette
Example
His speech was full of solecisms and awkward phrases.
他的演讲充满了语法错误和笨拙的短语。
C2 adjective /ˌsɛm.iˈkɒn.ʃəs/

semiconscious

半意识的
Meaning
Only partly conscious; not fully aware of surroundings.
Example
He was semiconscious after the accident and could barely respond.
他在事故后半意识清醒，几乎无法回应。
B2 adverb /ˈsɪmɪlərli/

similarly

类似地
Meaning
in a similar way
Example
Similarly, we can achieve success with dedication and hard work.
以相似的方式，我们可以通过奉献和努力工作取得成功。
B1 noun /ˈʃel.tər/

Shelter

避难所
Meaning
a place giving temporary protection from bad weather or danger
Example
The hikers found shelter in a cave during the heavy rain.
登山者在大雨中在山洞里找到了避难所。
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。
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。
C2 noun /ˈsɪbɪləns/

sibilance

嘶嘶声
Meaning
A hissing or hushing sound, especially in speech with 's' or 'sh'.
Example
The poet used sibilance to create a soft, hissing effect in the verse.
诗人用西比兰斯在诗句中创造了一个柔和的嘶嘶效果。
B1 adverb /ˈsædli/

sadly

悲伤地
Meaning
in a sorrowful or unhappy manner
Example
She sadly waved goodbye as the train departed.
火车开走时，她悲伤地挥手告别。
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。
B2 noun/verb /stʌnt/

stunt

Meaning
a daring or unusual action performed for entertainment or publicity; to hinder growth or development
Example
The actor performed a dangerous stunt in the movie.
B1 noun ˈstrætədʒi

strategy

战略
Meaning
A plan of action designed to achieve a long-term or overall aim.
Example
The strategy ensured success.
该战略确保了成功。
B2 noun/verb /ˈsɜːveɪ/

survey

调查，问卷调查
Meaning
noun: an examination or inspection; verb: to examine or measure (an area or subject)
Example
They conducted a survey to understand customer preferences.
他们进行了一项调查，以了解客户的偏好。
B1 noun /ˈsɛt ʌp/

set-up

设置
Meaning
The arrangement or organization of something; a planned structure or scheme
Example
The company presented a new set-up for the office layout.
公司为办公室布局提出了一个新的设定。
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。
C1 adjective /ˈsted.fæst/

Steadfast

坚定; 坚决; 不动摇
Meaning
firm in belief, determination, or adherence; unwavering
Example
She remained steadfast in her commitment to helping the poor.
她在帮助穷人方面保持坚定的决心。
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 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 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 /ˈskʌlp.tʃər/

Sculpture

雕塑; 通过雕刻制作的艺术品
Meaning
the art of making objects by carving; a work of art made by carving
Example
The museum displays ancient Greek sculpture.
博物馆展示了古希腊雕塑。
B2 noun /ˈspəʊkspɜːrsən/

spokesperson

发言人
Meaning
a person who speaks on behalf of others or an organization
Example
The spokesperson addressed the press conference on behalf of the company.
发言人代表公司在新闻发布会上发言。
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 /səˈpraɪz/

surprise

惊讶
Meaning
a sudden and unexpected event or situation
Example
His arrival was a pleasant surprise.
他的到来是一个愉快的惊讶。
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。
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。
C1 verb /strʌt/

strut

昂首阔步
Meaning
to walk with a stiff, proud, and confident gait, often to show off
Example
He strutted across the stage after winning the award.
他赢得奖项后自信地走上了舞台。
B1 verb /stretʃ/

stretch

拉伸
Meaning
to extend or expand; to make or become longer or wider
Example
Athletes stretch their muscles before exercising.
运动员在锻炼前拉伸他们的肌肉。
B1 verb/adjective /sɪˈkjʊər/

secure

确保
Meaning
to make safe or protect; to fix something firmly in place
Example
Please secure the door before you leave.
请在离开前确保门锁好。
C1 noun /sleɪ/

sleigh

雪橇
Meaning
A vehicle pulled by horses or reindeer over snow or ice.
Example
Children were excited to ride in the sleigh through the snowy village.
孩子们兴奋地在雪地小村庄里骑上雪橇。
C1 noun /ˈsæf.aɪər/

Saphire

蓝宝石
Meaning
a precious stone that is typically blue in color
Example
The royal crown was adorned with a large sapphire.
皇家王冠上镶嵌着一颗大蓝宝石。
C2 noun /ˈsɪlvər kɑrp/

Silver carp

银鲤
Meaning
a large freshwater fish with silvery scales, commonly farmed for food
Example
Silver carp is widely cultivated in fish farms across Asia.
银鲤在亚洲的鱼场中被广泛养殖。
C2 noun /ˈsɪmpəltən/

simpleton

傻瓜
Meaning
a foolish or gullible person
Example
They treated him like a simpleton who could not understand anything complex.
他们把他当作一个无法理解复杂事物的傻瓜对待。
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。
C2 noun ˈsaɪəns ˈdezət

science-desert

科学荒漠
Meaning
A region or area lacking in scientific development, research facilities, or educational institutions.
Example
J.C. Bose thrived in a science-desert.
J.C. Bose 在科学荒漠中茁壮成长。
C2 noun /spʌndʒ ɡɔːrd/

Sponse gourd

海绵瓜
Meaning
a fibrous gourd that becomes sponge-like when dried, used for cleaning and in cooking when young
Example
The sponge gourd can be eaten when young or dried to make natural scrubbers.
海绵瓜可以在年轻时食用，或者干燥后制成天然海绵。
B2 adjective /swɪft/

swift

Meaning
moving very quickly; happening promptly
Example
The river current was swift after the heavy rain.
A1 adverb /ˈsʌm.taɪmz/

Sometimes

有时
Meaning
at times; occasionally; now and then
Example
Sometimes I go for a walk in the evening.
有时我会在晚上散步。
C1 noun ˌsteɪbəlaɪˈzeɪʃən

stabilization

稳定化
Meaning
The process of making or becoming stable.
Example
The stabilization of the structure was essential after the earthquake.
地震后，结构的稳定化至关重要。