saucy
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C1 adjective /ˈsɔːsi/

saucy

大胆的
Meaning
Boldly rude, cheeky, or playfully disrespectful.
Example
The child gave a saucy reply to his teacher.
那个孩子给老师一个大胆的回答。
C2 noun /ˈsɛrəf/

seraph

六翼天使
Meaning
An angelic being associated with light and purity, often depicted as a high-ranking angel in Christian theology.
Example
The stained-glass window depicted a seraph with outstretched wings.
彩色玻璃窗描绘了一个展开翅膀的六翼天使。
B2 adjective /swɪft/

swift

Meaning
moving very quickly; happening promptly
Example
The river current was swift after the heavy rain.
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 /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。
C1 adjective /ˈstæɡ.nənt/

Stagnant

停滯的; 靜止的; 無發展的
Meaning
not moving or flowing; showing no activity or development
Example
The stagnant water in the pond was covered with algae.
池塘裡的停滯水被藻類覆蓋。
A2 noun steɪt

state

国家
Meaning
A nation or territory considered as an organized political community under one government.
Example
The state declared a new language policy.
国家宣布了一项新的语言政策。
B2 noun, verb /slænt/

slant

偏见观点
Meaning
A particular point of view; to slope or lean in a particular direction.
Example
The article had a political slant.
文章有政治倾向。
C1 noun /ˈswiːt.miːt/

Sweetmeat

甜点
Meaning
a small piece of confectionery or candy; a sweet delicacy
Example
The children enjoyed the traditional sweetmeats during the festival.
孩子们在节日期间享受了传统的甜点。
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。
C1 /ʃrɛd/

shred

撕裂
Meaning
to tear or cut something into small pieces
Example
She shredded the old documents before throwing them away.
她在扔掉之前把旧文件撕成了碎片。
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。
C1 noun /səˈrɛn.ɪ.ti/

serenity

宁静
Meaning
The state of being calm, peaceful, and untroubled.
Example
Meditation helps in achieving inner serenity.
冥想有助于实现内心的平静。
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 /ˈʃoʊldər/

Shoulder

肩膀
Meaning
the part of the body between the neck and the arm
Example
He carried the bag over his shoulder.
他把包拿在肩膀上。
C1 verb /smɜrk/

smirk

得意的微笑
Meaning
to smile in a self-satisfied, smug, or silly way
Example
He smirked when he won the argument.
他在赢得争论时得意地笑了。
B2 noun /ʃɪt/

shit

屎
Meaning
a vulgar term for feces or excrement
Example
The dog made a mess by leaving its shit on the floor.
狗在地板上留下了它的屎，弄得一团糟。
B2 adjective /ˈstɛdi/

steady

稳定
Meaning
firm, stable, and not likely to change suddenly
Example
He kept his hand steady while painting the picture.
他在画画时保持手稳定。
C1 noun speɪst ˌrep.ɪˈtɪʃ.ən

spaced repetition

间隔重复
Meaning
A learning technique that involves reviewing information at increasing intervals to improve long-term retention.
Example
Spaced repetition helps in long-term memory retention.
间隔重复有助于长期记忆保持。
B1 noun /ˈslɪpər/

Slipper

拖鞋
Meaning
light, comfortable shoe without a back, worn indoors
Example
She put on her slippers before walking around the house.
她在走遍房子之前穿上了拖鞋。
C1 adjective /ˈsɜːrpənˌtiːn/

serpentine

蛇形的
Meaning
Having the shape, movement, or qualities of a serpent; winding or twisting.
Example
The road took a serpentine path through the mountains.
这条路穿过山脉，呈蛇形蜿蜒。
C2 noun /ˈsækrɪsti/

sacristy

圣器室
Meaning
a room in a church where sacred vessels and vestments are kept
Example
The priest entered the sacristy before the mass began.
神父在弥撒开始前进入了圣器室。
C1 adjective /ˈʃɑːdi/

shoddy

劣质
Meaning
badly made or done; of poor quality
Example
The contractor did a shoddy job on the repairs.
承包商在修理工作中做了劣质的工作。
B1 adjective /spəˈsɪfɪk/

specific

具体的
Meaning
Clearly defined or identified; particular; exact.
Example
Make a specific plan to beat procrastination.
制定一个具体的计划以克服拖延。
A2 noun /ˈsteɪʃən/

station

Meaning
a place where a particular service is provided, especially for transportation
Example
We arrived at the station just in time for the train.
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。
B1 noun /swiːt pəˈteɪtoʊ/

Sweet potato

红薯
Meaning
A root vegetable with sweet flesh, typically orange or purple in color
Example
Roasted sweet potato makes a healthy and delicious side dish.
烤红薯是健康美味的配菜。
C2 adjective /ˈsʌb.æs.ɪd/

subacid

轻微酸
Meaning
Slightly sour or acidic in taste or nature.
Example
The fruit had a subacid flavor that was refreshing on a hot day.
这种水果有一种轻微酸的味道，在炎热的日子里非常清爽。
C2 noun /səbˈsɜːviəns/

subservience

奴性
Meaning
the condition of being too willing to obey or serve others
Example
His subservience to authority annoyed his colleagues.
他对权威的奴性让同事们感到烦恼。
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。
C1 adjective/noun /ˈsʌkjələnt/

succulent

多汁的
Meaning
Juicy or full of juice; also refers to a plant with thick, fleshy leaves adapted to storing water.
Example
The steak was so succulent that everyone enjoyed it.
这块牛排多汁到每个人都喜欢。
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 noun /spɔːt/

sport

体育
Meaning
an activity involving physical exertion and skill in which an individual or team competes against another or others for entertainment
Example
Football is a popular sport around the world.
足球是全球流行的体育运动。
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。
C1 noun /ˈsɑːɡə/

saga

长篇故事
Meaning
A long story of heroic achievement, or a long, complex series of events.
Example
The company's rise and fall became a corporate saga.
公司的兴衰成为了一部企业传奇。
C1 noun /ˈsɒlstɪs/

solstice

至点
Meaning
the two times in the year when the sun is at its greatest distance from the equator (summer and winter solstice)
Example
People celebrate the summer solstice with festivals and rituals.
人们通过节日和仪式庆祝夏至。
C1 noun /ʃeɪl/

shale

页岩
Meaning
a fine-grained sedimentary rock that can be split into thin layers
Example
The region is rich in shale and natural gas deposits.
该地区富含页岩和天然气储备。
A1 adjective /ʃɔːrt/

Short

短的; 简短的
Meaning
having a small length, height, or duration; not long
Example
The meeting was very short, lasting only ten minutes.
会议非常短，仅持续了十分钟。
C2 noun /sɛkˈstɛt/

sextet

六重奏
Meaning
a group of six people playing music or a piece written for six performers
Example
The jazz sextet filled the small club with a warm, layered sound.
这支爵士六重奏用温暖、分层的声音填满了小俱乐部。
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。
A2 noun /spuːn/

Spoon

勺子
Meaning
an implement consisting of a small, shallow bowl on a long handle, used for eating, stirring, and serving food
Example
He used a spoon to eat his soup.
他用勺子吃汤。
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。
B2 noun /səbˈskraɪbər/

subscriber

订阅者
Meaning
a person who receives or subscribes to a service, magazine, or service
Example
She is a subscriber to the monthly magazine.
她是每月杂志的订阅者。
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。
A2 noun /steɪdʒ/

stage

舞台
Meaning
a raised platform or area for performances or presentations
Example
The actor stepped onto the stage to deliver his speech.
演员登上舞台，发表他的演讲。
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 verb /səˈspɛnd/

suspend

暂停
Meaning
To temporarily stop something from being active or valid.
Example
The company decided to suspend his membership.
公司决定暂停他的会员资格。
B2 adverb /ˈsmɑːt.li/

Smartly

聪明地; 有风格地; 快速地
Meaning
in a clever or intelligent way; neatly and stylishly; quickly
Example
He was smartly dressed for the business meeting.
他为商务会议穿得很聪明。
B2 noun /ˌsɛpəˈreɪʃən/

Separation

分离；隔离；拆分
Meaning
the action or state of moving or being moved apart; the division of something into constituent or distinct elements
Example
The separation of the two countries was peaceful.
两个国家的分离是和平的。
C1 noun /ˈskaʊndrəl/

scoundrel

无赖
Meaning
a dishonest or unscrupulous person; a villain
Example
That scoundrel cheated the old man out of his savings.
那个无赖骗取了老人家的积蓄。
C1 noun /sɔːd fɪʃ/

Sword fish

剑鱼
Meaning
A large marine fish with an elongated bill resembling a sword
Example
The swordfish can swim at speeds up to 60 mph.
剑鱼的游泳速度可达每小时60英里。
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。
C2 noun /sɪˈrɒkoʊ/

sirocco

炎热干燥的风
Meaning
A hot, dry wind blowing from North Africa across the Mediterranean to southern Europe.
Example
The sirocco made the city unbearably hot and dusty.
西罗科让这座城市变得极其炎热和尘土飞扬。
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 verb /ˈskwɒbəl/

squabble

为琐事争吵
Meaning
To argue noisily over something small or unimportant.
Example
The children squabbled over the last piece of cake.
孩子们争论最后一块蛋糕。
B1 verb səˈpɔːrtɪŋ

supporting

支持
Meaning
Giving assistance to; helping to bear the weight of something.
Example
Supporting education initiatives helps reduce child labour.
支持教育倡议有助于减少童工。
C2 adjective /sɪˈnæp.tɪk/

synaptic

突触的
Meaning
Related to the signal transmission process between nerve cells.
Example
Learning strengthens synaptic connections in the brain.
学习增强大脑中的突触连接。
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。
C2 verb /ˈseɪʃiˌeɪt/

satiate

满足
Meaning
To satisfy fully, especially with food or desire.
Example
The large meal satiated his hunger.
丰盛的餐食满足了他的饥饿。
A2 noun /skɜːrt/

Skirt

裙子
Meaning
a garment that hangs from the waist and covers part or all of the legs
Example
She chose a blue skirt to match her blouse.
她选择了一条蓝色的裙子，以配合她的衬衫。
A2 noun /ˈsæd.nəs/

Sadness

悲伤，痛苦，忧郁
Meaning
feeling of sorrow, unhappiness, or grief
Example
Her sadness was evident after hearing the bad news.
她听到坏消息后，她的悲伤显而易见。
B2 noun /ˌsoʊsiˈɑːlədʒi/

sociology

社会学
Meaning
the study of society, human relationships, and social institutions
Example
She is studying sociology at university.
她在大学学习社会学。
C1 noun /ˈsʌtlti/

subtlety

微妙
Meaning
The quality or state of being subtle.
Example
She understood the subtlety of the situation.
她理解了局势的微妙之处。
C2 noun /ˌspoʊliˈeɪʃən/

spoliation

破坏
Meaning
The act of destroying or ruining something, often evidence or property.
Example
The court punished the company for the spoliation of evidence.
法院因公司破坏证据而惩罚了该公司。
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。
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 adjective /ˈʃɒkɪŋ/

shocking

令人震惊的
Meaning
causing surprise or disbelief; startling
Example
The news of the accident was shocking to everyone.
事故的消息令所有人震惊。
B1 adjective /ˈsæt.ɪs.fæk.tər.i/

Satisfactory

令人满意的
Meaning
acceptable; meeting requirements; adequate
Example
The test results were satisfactory.
测试结果令人满意。
B2 noun /səˈspɪʃən/

Suspicion

怀疑
Meaning
a feeling or thought that someone is guilty of an illegal or dishonest activity
Example
The police arrested him on suspicion of theft.
警方以盗窃嫌疑逮捕了他。
B2 noun /səkˈses.ər/

Successor

继任者
Meaning
a person who succeeds another in office; someone who takes over a position or role
Example
The CEO announced his retirement and named his successor for the company.
首席执行官宣布了退休，并为公司指定了继任者。
A2 noun /smɔːl boʊl/

Small bowl

小碗
Meaning
a round, shallow container of small size used for serving food or liquids
Example
She served the soup in a small bowl.
她把汤倒在一个小碗里。
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。
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。
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。
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 noun /ˈsʌm.ɪt əv ðə ˈfjuː.tʃər/

Summit of the Future

未来峰会
Meaning
A high-level conference focused on addressing future challenges and opportunities.
Example
The Summit of the Future addressed global challenges.
未来峰会解决了全球性挑战。
C1 adjective /səˈtɪrɪkəl/

satirical

讽刺的
Meaning
containing or using satire to criticize or mock
Example
The satirical cartoon mocked the government's new policy.
讽刺漫画嘲笑了政府的新政策。
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。
C1 verb /splaɪs/

splice

拼接
Meaning
to join two pieces of rope, film, or other material by weaving or attaching them together
Example
The technician spliced the two wires to restore the connection.
技术员将两根电线拼接起来以恢复连接。
C1 adjective /ˈskræpi/

scrappy

好斗 / 杂乱
Meaning
Determined and willing to fight or argue; also messy or disorganized.
Example
Despite being small, he was a scrappy fighter.
尽管身材小，他却是一个好斗的战士。
A2 adjective /skɛrd/

scared

害怕的
Meaning
feeling afraid or worried
Example
She was scared of the dark.
她害怕黑暗。
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。
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 adjective /ˈsek.j ə.l ər/

Secular

世俗的
Meaning
not connected with religious or spiritual matters; worldly
Example
The country maintains a secular government that separates religion from politics.
这个国家维持一个世俗的政府，将宗教与政治分离。
C2 adjective /sɪˈdɪʃəs/

seditious

煽动叛乱的
Meaning
Encouraging rebellion against authority.
Example
The activist spread seditious pamphlets among the crowd.
活动家在群众中散发了煽动叛乱的传单。
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。
C1 noun /ˈstɒpɪdʒ/

stoppage

停顿; 停止
Meaning
The act of stopping or ceasing; a halt in operation or activity
Example
The sudden stoppage of the train caused delays for all passengers.
火车的突然停运导致所有乘客延误。
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。
A2 verb /siːm/

seem

看起来
Meaning
to give the impression of being something or having a particular quality
Example
He seems tired after the long journey.
他看起来在长时间的旅程后很累。
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。
C1 noun /səˈlɪləkwi/

soliloquy

独白
Meaning
a speech in which a character talks to themselves, often used in drama to reveal inner thoughts
Example
Hamlet's soliloquy is one of the most famous passages in Shakespearean drama.
哈姆雷特的独白是莎士比亚戏剧中最著名的段落之一。
B2 noun /ˈstæm.ɪ.nə/

Stamina

耐力
Meaning
the ability to sustain prolonged physical or mental effort
Example
Marathon runners need great stamina to complete the race.
马拉松选手需要强大的耐力才能完成比赛。
B1 verb /ˈsætɪsfaɪ/

satisfy

满足
Meaning
to fulfill the desires, expectations, or needs of someone; to make content
Example
The delicious meal satisfied our hunger completely.
美味的食物完全满足了我们的饥饿。
C1 noun /səˈbætɪkəl/

sabbatical

用于学习或旅行的休假期
Meaning
A period of paid leave granted to a teacher or worker for study or travel, traditionally every seventh year.
Example
She took a sabbatical to research her new book.
她为了研究她的新书而休了一个萨巴提卡尔假期。
C1 adjective /ˈskɪtɪʃ/

skittish

紧张的
Meaning
easily frightened or nervous; unpredictable
Example
The horse was too skittish to ride.
那匹马太紧张，无法骑乘。
B2 noun /sɪlk/

silk

丝绸
Meaning
a fine, smooth fabric made from the threads produced by silkworms
Example
The dress was made of pure silk.
这件裙子是用纯丝绸做的。
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。
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。
B1 noun /ʃɒk/

shock

震惊
Meaning
a sudden upsetting or surprising event or experience
Example
The news of his sudden departure was a shock to everyone.
他的突然离开消息让每个人都震惊。
C1 adjective /ˈsæk.rəˌsæŋkt/

sacrosanct

神圣不可侵犯的
Meaning
Regarded as too important or valuable to be interfered with; sacred.
Example
Freedom of speech is considered sacrosanct in democratic societies.
言论自由在民主社会中被视为神圣不可侵犯的。
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。
B1 adjective /ʃɛrd/

shared

共享
Meaning
used, done, or experienced by two or more people together
Example
They live in a shared apartment near the university.
他们住在大学附近的一间共享公寓里。
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。
C1 verb /slɪŋk/

slink

悄悄移动
Meaning
to move quietly and secretly, often to avoid being noticed
Example
The cat slunk into the room without making a sound.
猫悄悄地进入房间，没有发出任何声音。
B2 noun /swɪŋ/

Swing

秋千
Meaning
move or cause to move back and forth or from side to side while suspended or on an axis
Example
The children love to swing in the park.
孩子们喜欢在公园里荡秋千。
A2 verb /saɪn/

sign

签名
Meaning
to write your name on something to show agreement or approval; to make a gesture with meaning
Example
Please sign the contract at the bottom of the page.
请在页面底部签署合同。
B2 noun ˌsɛlf ˈdɪs.ə.plɪn

self-discipline

自律
Meaning
The ability to control one's emotions and behavior.
Example
Self-discipline is crucial for achieving long-term success.
自律对于长期成功至关重要。
B1 noun sɪˈlek.ʃən

selection

选择
Meaning
The action or fact of carefully choosing someone or something as being the best or most suitable.
Example
The selection process is based on merit.
选择过程基于优点。
A2 noun /siːt/

seat

座位
Meaning
a place to sit, especially a chair or other place for sitting
Example
I reserved a seat for you at the concert.
我为你在音乐会预定了一个座位。
C1 noun /ˈsɪlk.wɜːrm/

Silk-worm

蚕
Meaning
the caterpillar of a moth that produces silk fibers used to make silk fabric
Example
Silkworms feed on mulberry leaves to produce silk.
蚕虫以桑叶为食，产生丝绸。
B2 noun /ˈsɜr.neɪm/

Surname

姓氏
Meaning
a hereditary name common to all members of a family; family name
Example
Please write your first name and surname on the form.
请在表格上写下您的名字和姓氏。
C1 adjective /ˈsʌpl/

supple

柔韧的
Meaning
Easily bending or moving without breaking; flexible and adaptable.
Example
The gymnast’s body was remarkably supple.
体操运动员的身体异常柔韧。
B2 noun /siːdʒ/

siege

围攻
Meaning
A military operation in which a place is surrounded to force its surrender.
Example
The castle fell after a long siege.
城堡在长时间的围困后倒塌。
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 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。
C2 noun /ˈʃɪbəˌlɛθ/

shibboleth

区分特定群体的习语或信仰
Meaning
A custom, phrase, or belief distinguishing a particular group of people, often used to identify outsiders.
Example
The phrase became a political shibboleth during the campaign.
这句话在竞选期间成为了一个政治性的shibboleth。
C2 noun /ˌsuːpərɪnˈtɛndəns/

superintendence

监督
Meaning
the act of overseeing, supervising, or managing
Example
The superintendence of the school is the principal’s duty.
学校的监督是校长的责任。
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。
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。
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。
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。