sustainable technology
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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。
B1 verb /ˈsʌfər/

suffer

遭受
Meaning
to experience pain, distress, or hardship
Example
She suffered from a severe headache all day.
她整天忍受剧烈的头痛。
C1 noun /səˈlɛmnɪti/

solemnity

庄严
Meaning
the state or quality of being serious and dignified
Example
The ceremony was conducted with great solemnity.
仪式在庄严的气氛中进行。
C2 noun /spjuːm/

spume

泡沫
Meaning
Froth or foam, especially found on waves or liquids.
Example
The waves crashed against the rocks, leaving spume in the air.
波浪撞击岩石，空气中留下泡沫。
A1 noun /suːp/

Soup

汤
Meaning
a liquid food made by boiling meat, vegetables, or other ingredients in water
Example
I had a bowl of chicken soup for lunch.
我午餐吃了一碗鸡汤。
B2 verb, noun /sniːz/

sneeze

打喷嚏
Meaning
to expel air involuntarily from the nose and mouth due to irritation; the act of sneezing
Example
I had to sneeze during the meeting.
我在会议中不得不打喷嚏。
B1 verb /ˈsɪzər/

scissor

用剪刀剪
Meaning
to cut with or as if with scissors
Example
The tailor scissored the fabric neatly.
裁缝整齐地剪了布料。
B2 adjective strəˈtiː.dʒɪk

strategic

战略的
Meaning
Relating to the identification of long-term or overall aims and interests and the means of achieving them.
Example
Strategic policies enhance competitiveness.
战略性政策增强竞争力。
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。
B2 noun /sloʊp/

Slope

坡; 倾斜的地面
Meaning
an inclined surface; a piece of ground that is not level
Example
We walked up the steep slope of the mountain.
我们走上了陡峭的山坡。
C2 noun səˈtaɪ.ə.ti

satiety

饱腹感
Meaning
The feeling of being satisfied or full, especially with regard to food.
Example
High-fiber foods provide longer satiety.
富含纤维的食物提供更长时间的饱腹感。
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。
B2 noun /ˈsɑːfmɔːr/

sophomore

大二学生
Meaning
a student in their second year of study at a university or high school
Example
He’s a sophomore in college, studying computer science.
他是大学的二年级学生，学习计算机科学。
C2 noun /skæd/

scad

斯卡德鱼
Meaning
A type of fish of the jack family; also informally means a large number or quantity.
Example
The fisherman caught a scad in the net.
渔夫在网中抓住了一条斯卡德。
C2 verb /ˈsɪmpər/

simper

傻笑或做作的笑
Meaning
to smile in a silly, self-conscious, or affected way
Example
She simpered at his compliment, clearly embarrassed.
她在他的夸奖下傻笑，显然感到尴尬。
C1 verb /sleɪ/

slay

Meaning
to kill violently; informally, to impress greatly
Example
The hero vowed to slay the dragon.
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。
B1 noun /ˈspæroʊ/

Sparrow

麻雀
Meaning
small brown and grey bird commonly found in cities and towns
Example
The sparrow chirped cheerfully from the tree branch.
麻雀愉快地从树枝上啁啾。
A2 noun /saɪz/

size

尺寸
Meaning
the physical dimensions, proportions, or magnitude of something
Example
This shirt is too small in size for me.
这件衬衫对我来说在尺寸上太小了。
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 adjective /skænt/

Scant

稀少的
Meaning
barely sufficient; inadequate; small in amount
Example
There was scant evidence to support his claim.
支持他主张的证据非常少。
A2 noun /soʊp/

Soap

肥皂
Meaning
a cleaning agent made from fats or oils and used for washing
Example
Please wash your hands with soap and water.
请用肥皂和水洗手。
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。
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。
B2 noun /ˈsuː.ɪ.saɪd/

Suicide

自杀
Meaning
the act of intentionally killing oneself
Example
Mental health professionals work to prevent suicide.
心理健康专家致力于预防自杀。
C2 adjective /ˈsfɪŋks laɪk/

sphinx-like

神秘的
Meaning
Mysterious, enigmatic, or difficult to interpret
Example
Her sphinx-like smile made it hard to guess what she was thinking.
她的斯芬克斯式笑容让人难以猜测她在想什么。
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。
C2 adjective /sɪmˈfoʊniəs/

symphonious

Meaning
Harmonious; producing a pleasant sound or agreement of sound.
Example
The choir's voices were symphonious and filled the hall with beauty.
A2 verb /sɑːlv/

solve

解决
Meaning
to find an answer to a problem or question; to resolve a difficulty
Example
The detective finally solved the mysterious case.
侦探终于解决了神秘案件。
B1 noun /stiːl/

steel

钢铁
Meaning
a strong, hard metal made of iron and carbon
Example
The building was made from steel to ensure its durability.
建筑物是用钢铁建造的，以确保其耐久性。
B2 adjective /ˈʃɔːrt ˌtempərd/

Short-tempered

易怒的; 容易生气的
Meaning
quick to lose one's temper; easily angered
Example
She became short-tempered when the traffic made her late for the meeting.
当交通让她迟到时，她变得很暴躁。
C1 noun/verb /ˈslʌmbər/

slumber

睡眠
Meaning
A state of sleep; to sleep lightly or rest.
Example
The child slumbered peacefully through the night.
孩子整夜安静地睡觉。
C2 noun /ˌsɪɡnɪfɪˈkeɪʃən/

signification

含义
Meaning
the meaning or sense conveyed by a word, action, or symbol
Example
The signification of the gesture was misunderstood.
这个手势的含义被误解了。
C2 adjective /ˈsiːkwənt/

sequent

随后的
Meaning
Following in order or as a result.
Example
The sequent events changed the course of history.
随后的事件改变了历史的进程。
B1 adjective /ˈskɪlfʊl/

Skilful

熟练的; 能手; 专家
Meaning
having or showing skill; expert and accomplished
Example
The skilful surgeon performed the operation with great precision.
熟练的外科医生以极高的精确度完成了手术。
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 /ˈsɔːlti/

Salty

咸的
Meaning
having the taste of salt; containing salt; tasting of seawater
Example
The salty ocean water made her thirsty.
咸海水让她口渴。
C1 verb /ˈstæmər/

stammer

结巴
Meaning
To speak with sudden involuntary pauses and a tendency to repeat the initial letters of words.
Example
The nervous student began to stammer during his speech.
紧张的学生在演讲中开始结巴。
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。
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。
C2 adjective /saɪˈdɪəriəl/

sidereal

恒星的
Meaning
Relating to the stars or constellations; measured relative to the stars.
Example
Astronomers use sidereal time to track the positions of stars.
天文学家使用恒星时间来追踪星星的位置。
B2 adjective /sə'spɪʃ.əs/

Suspicious

可疑的；怀疑的
Meaning
having or showing distrust; doubtful; questionable
Example
The police found his behavior very suspicious.
警察发现他的行为非常可疑。
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。
B1 noun /ˈsæl.ər.i/

Salary

薪水
Meaning
a fixed regular payment, typically paid on a monthly basis
Example
She receives a good salary for her work as a teacher.
她作为教师的工作，得到了很好的薪水。
C1 noun səbˈsɪs.təns

subsistence

生计
Meaning
The action or fact of maintaining or supporting oneself at a minimum level.
Example
Many farmers depend on subsistence agriculture.
许多农民依靠自给农业谋生。
B2 verb /sɔːr/

soar

翱翔 / 快速增长
Meaning
to fly or rise high in the air; to increase rapidly or dramatically
Example
The eagle soared high above the mountains.
鹰飞得很高，越过山脉。
C2 adjective /səˈpʌlkrəl/

sepulchral

与墓葬相关，阴森的
Meaning
Relating to a tomb or burial; gloomy, dismal.
Example
The abandoned house had a sepulchral silence about it.
废弃的房子弥漫着墓葬般的寂静。
A1 verb /seɪ/

say

说
Meaning
to speak words; to express something in words
Example
She said hello to me.
她对我说了你好。
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。
C2 adjective /ˈʃɑːpwɔːrn/

shopworn

旧的 / 陈旧的
Meaning
worn or faded from being displayed in a shop; no longer fresh or original
Example
The shopworn shoes were sold at a discount.
这些 shopworn 鞋子以折扣价出售。
C2 noun /ˈsætər/

satyr

幸福
Meaning
a creature from Greek mythology depicted as a lustful being, often half-man and half-goat; by extension, a lecherous man
Example
In the museum mural, a satyr plays the panpipes while dancing in the woods.
当她获得奖项时，她无法掩饰自己的幸福。
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 noun /ˈʃæmbəlz/

shambles

一片混乱
Meaning
a state of complete disorder or ruin
Example
After the storm, the whole town was in shambles.
风暴过后，整个城镇陷入了一片混乱。
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。
B2 verb /ˈskætər/

scatter

散播
Meaning
to spread or throw around in different directions
Example
The wind scattered the leaves across the yard.
风把叶子撒到院子里。
B2 noun/verb /swɑːmp/

swamp

沼泽
Meaning
An area of low-lying, uncultivated ground where water collects; a bog or marsh.
Example
The village was built near a swamp.
村庄建在一个沼泽附近。
C2 adjective /səˈdʒɛstəbəl/

suggestible

易受影响的
Meaning
easily influenced by the suggestions of others
Example
Children are highly suggestible and may believe what they are told.
孩子们很容易受到影响，可能会相信他们被告知的事情。
C1 verb /ˈstrætɪfaɪ/

stratify

分层
Meaning
to arrange or divide into layers, classes, or categories
Example
The researchers plan to stratify the data based on age groups.
研究人员计划根据年龄组对数据进行分层。
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。
C1 verb /ˈsɪn.θə.saɪz/

synthesize

合成
Meaning
To combine a number of things into a coherent whole.
Example
Scientists synthesize new compounds for medical research.
科学家为医学研究合成新的化合物。
C1 noun /ˈskruːpəl/

scruple

顾忌
Meaning
A moral or ethical consideration that restrains actions.
Example
He had no scruples about lying to get ahead.
他在为了进步而撒谎时没有任何顾忌。
B1 verb /swɪtʃ/

switch

切换
Meaning
to change from one thing to another; to exchange or replace
Example
I switched from coffee to tea.
我从咖啡转到茶。
C2 adjective /ˌsɛm.iˈsɪv.ə.laɪzd/

semicivilized

半文明
Meaning
Partially civilized; having some aspects of civilization but not fully developed.
Example
The tribe was described as semicivilized by early explorers.
该部落被早期探险家描述为半文明。
B2 verb /skoʊld/

scold

责骂
Meaning
to criticize angrily; to rebuke
Example
The teacher scolded the students for being late.
老师因为学生迟到而责骂他们。
B2 adverb ˌsɪməlˈteɪnɪəsli

simultaneously

同时
Meaning
At the same time; occurring or existing at the same time.
Example
He worked on two projects simultaneously.
他同时在做两个项目。
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。
B2 noun /ˌsɪmjuˈleɪʃən/

simulation

模拟
Meaning
the imitation of a situation or process
Example
The simulation helped the students understand the complex theory.
模拟帮助学生理解复杂的理论。
C1 adjective ˌsəʊsɪəʊpəˈlɪtɪkəl

sociopolitical

社会政治
Meaning
Combining social and political factors.
Example
Sociopolitical factors often influence public policy decisions.
社会政治因素经常影响公共政策决策。
B2 noun /ˈswɛər wɜːrd/

swear-word

脏话
Meaning
An offensive or rude word used to express anger or frustration.
Example
He shouted a swear-word when he hit his toe.
当他撞到脚趾时，他大喊了一句脏话。
C1 verb ˈsɪŋ.krə.naɪz

synchronize

同步
Meaning
To coordinate in time; to cause to occur or operate at the same time or rate.
Example
The dancers need to synchronize their movements.
舞者需要同步他们的动作。
B2 adverb /ˈskeəs.li/

Scarcely

几乎; 几乎不; 仅仅
Meaning
hardly; barely; only just
Example
I could scarcely believe my eyes.
我几乎不敢相信自己的眼睛。
B1 noun /ˈseɪ.vɪŋz/

savings

储蓄
Meaning
Money that is saved, especially in a bank or official scheme for future use.
Example
Many people invest their savings in real estate.
许多人将他们的储蓄投资于房地产。
B1 noun /sleɪv/

slave

奴隶
Meaning
a person who is the legal property of another and is forced to work for them
Example
The abolitionist movement fought for the rights of slaves.
废奴主义者运动为奴隶的权利而奋斗。
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。
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 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。
C1 verb /ʃʌnt/

shunt

转轨
Meaning
to move or turn aside; to push or divert from one track to another
Example
The train was shunted onto a different track.
火车被调到另一条轨道。
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。
C1 adjective /ˈstɒdʒi/

stodgy

沉闷的，老式的
Meaning
Dull, uninspired, or old-fashioned; also heavy and hard to digest when referring to food.
Example
The lecture was so stodgy that many students struggled to stay awake.
讲座太沉闷了，以至于许多学生难以保持清醒。
C2 noun ˈsɒmnələns

somnolence

嗜睡
Meaning
A state of drowsiness or sleepiness; inclination to sleep.
Example
The somnolence after a heavy meal made it hard to concentrate.
一顿重餐后的嗜睡让人难以集中注意力。
A2 adjective /ˈsɪli/

Silly

傻; 愚蠢
Meaning
foolish; lacking good sense or judgement
Example
Don't be silly, of course you can do it!
别傻了，当然你可以做到！
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。
C2 verb /sɪˈkwɛstreɪt/

sequestrate

查封
Meaning
To take legal possession of assets until a debt is paid or disputes are resolved.
Example
The court decided to sequestrate the company's property.
法院决定查封公司的财产。
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。
B2 noun /ˈspesɪmən/

Specimen

样本; 标本; 例子
Meaning
an individual example of something; a sample collected for scientific study or testing
Example
The scientist collected a blood specimen for analysis.
科学家收集了一份血液标本进行分析。
C2 adjective /splɪˈnɛtɪk/

splenetic

脾气暴躁的，易怒的
Meaning
bad-tempered, irritable, spiteful
Example
His splenetic remarks offended everyone in the room.
他的脾气暴躁的评论冒犯了房间里的每个人。
C1 noun /ˈspaɪər/

spire

尖顶
Meaning
a tall, pointed structure on top of a building, especially a church
Example
The church spire could be seen from miles away.
教堂的尖顶从远处可见。
C1 noun /ˈsɛdətɪv/

sedative

镇静剂
Meaning
A substance that calms the nerves or induces sleep.
Example
The doctor prescribed a sedative to help the patient sleep.
医生开了镇静剂来帮助病人入睡。
C2 adjective /stɛnˈtɔːriən/

stentorian

震耳欲聋
Meaning
Extremely loud and powerful in sound.
Example
The teacher’s stentorian voice quieted the noisy classroom.
老师那震耳欲聋的声音让嘈杂的教室安静了下来。
C1 noun /ˈsɔːl.tɪd fɪʃ/

Salted fish

咸鱼
Meaning
fish preserved with salt; dried and salted fish for storage
Example
Salted fish is a traditional way to preserve seafood.
咸鱼是保存海鲜的传统方法。
B2 adjective /sɑːrˈkæstɪk/

sarcastic

讽刺的
Meaning
Using irony or mockery to convey contempt or humor.
Example
She made a sarcastic remark about his cooking.
她对他的烹饪做了一个讽刺的评论。
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。
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.
A1 verb /stɒp/

stop

停止
Meaning
to cease moving or operating; to halt; to prevent
Example
Please stop talking during the movie.
请在电影期间停止说话。
C2 noun /ˌself əˈbeɪs.mənt/

self-abasement

自我贬低
Meaning
The act of belittling or humiliating oneself.
Example
His constant self-abasement made others uncomfortable.
他不断的自我贬低让其他人感到不舒服。
B1 noun /ˈsɜːdʒəri/

surgery

Meaning
a medical procedure involving the cutting of the body to treat a condition
Example
She underwent surgery to remove the tumor.
C1 verb /stoʊk/

stoke

Meaning
To add fuel to a fire; to encourage or increase a strong feeling or activity.
Example
The politician’s speech stoked anger among the crowd.
C2 noun /ˈsɛkstənt/

sextant

六分仪
Meaning
a navigational instrument with a graduated arc of 60°, used to measure the angle between a celestial object and the horizon
Example
Using a sextant, the navigator fixed the ship’s position at noon.
使用六分仪，导航员在中午确定了船的位置。
B1 verb /ʃaʊt/

shout

喊叫
Meaning
to say something very loudly
Example
He shouted at the top of his lungs to get their attention.
他尽可能大声地喊叫，以引起他们的注意。
B2 noun /ˌsɛlf əˈwɛə.nəs/

self-awareness

自我意识
Meaning
Conscious knowledge of one's own character, feelings, motives, and desires.
Example
Self-awareness helps in understanding one's emotions and actions.
自我意识有助于理解一个人的情感和行为。
C1 verb /siːð/

seethe

怒火中烧
Meaning
To be filled with intense but unexpressed anger or agitation.
Example
She was seething with anger after the unfair decision.
她在不公平的决定后怒火中烧。
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。
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 /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。
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 verb /skwiːz/

squeeze

挤压
Meaning
to press something firmly, especially from all sides in order to extract or compress it
Example
She squeezed the toothpaste to get the last bit.
她挤压牙膏管，想把最后一点挤出来。
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 verb /ˈstoʊnwɔːl/

stonewall

阻挡
Meaning
To delay or block progress by refusing to cooperate or answer
Example
The witness tried to stonewall during the investigation.
证人试图在调查期间做stonewall。
C1 noun /ˈsɜːr.vɪ.tuːd/

Servitude

奴役
Meaning
the state of being a slave or completely subject to someone more powerful
Example
Many people fought to escape the servitude imposed by the colonial system.
许多人为了摆脱殖民制度所强加的奴役而斗争。
B2 adjective /ˈsʌt.əl/

subtle

微妙, 轻微, 精细
Meaning
So delicate or precise as to be difficult to analyze or describe; making use of clever and indirect methods.
Example
The artist's use of color was subtle yet powerful.
艺术家对色彩的运用既微妙又有力。
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。
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。
C2 adjective /ˈsloʊθfəl/

slothful

懒惰
Meaning
Lazy, idle, and unwilling to work.
Example
She was too slothful to get out of bed early.
她太懒了，早上不想从床上起来。
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。
C1 noun /ˈsəʊdiəm/

sodium

钠
Meaning
a soft, silver-white chemical element that is highly reactive and found in salt.
Example
Sodium is an essential element for maintaining fluid balance in the body.
钠是维持体内液体平衡的必需元素。
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 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。
B1 verb /spred/

spread

传播
Meaning
to extend over a larger area; to distribute; to apply
Example
The news spread quickly through the town.
新闻迅速在城镇传播。
C1 noun /səˈbraɪəti/

sobriety

清醒
Meaning
the state of being sober; self-restraint and seriousness
Example
He has maintained his sobriety for five years.
他已经保持清醒五年了。
C2 noun /sɪlf/

sylph

空灵精灵
Meaning
A mythical spirit of the air; also refers to a slender, graceful woman.
Example
She moved across the stage like a sylph, light and graceful.
她像一个空灵精灵一样轻盈而优雅地在舞台上移动。
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。