stake
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B2 noun, verb /steɪk/

stake

股份, 风险
Meaning
A share or interest in a business or venture; to risk or support something of value.
Example
He has a major stake in the new company.
他在新公司拥有重大股份。
B2 verb /saɪ/

sigh

叹气
Meaning
to let out a long, deep breath as an expression of tiredness, relief, or sadness
Example
She sighed with relief when she heard the good news.
她听到好消息时松了口气。
B2 adjective /ˈʃɔːrt ˌsaɪtɪd/

Short-sighted

近视; 短期视野
Meaning
lacking foresight or consideration for the future; myopic
Example
His short-sighted decision to quit school early affected his career prospects.
他短视的决定早早离开学校影响了他的职业前景。
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。
B2 adjective /ˈsoʊʃəbəl/

Sociable

社交的; 友好的; 外向的
Meaning
friendly and enjoys being with other people; outgoing
Example
She is very sociable and makes friends easily.
她很社交，容易交到朋友。
B2 adjective /ˈsoʊlər/

solar

太阳的
Meaning
Relating to or determined by the sun
Example
The house is powered by solar energy.
这座房子由太阳能驱动。
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 verb /ˈskrɪbəl/

scribble

乱涂乱画
Meaning
to write or draw carelessly or quickly
Example
The child scribbled all over the wall.
孩子在墙上乱涂乱画。
B2 adjective /ˈʃæl.oʊ/

Shallow

浅薄; 不深; 缺乏深入知识
Meaning
not deep; superficial; lacking depth of knowledge
Example
The shallow water is perfect for children to play.
浅水适合孩子们玩耍。
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 /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。
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 adjective /ˈstɜːrdi/

sturdy

坚固
Meaning
strongly and solidly built; not easily weakened
Example
The carpenter made a sturdy wooden table.
木匠做了一张坚固的木桌。
B2 adjective /self səˈfɪʃənt/

Self-sufficient

自给自足
Meaning
able to provide for oneself without depending on others
Example
The farm is completely self-sufficient in producing vegetables.
这个农场在蔬菜生产方面完全自给自足。
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。
B2 noun ˈstræt.ɪ.dʒiz

strategies

战略
Meaning
A plan of action designed to achieve a long-term or overall aim; the art of planning and directing operations.
Example
Effective strategies can mitigate climate change impacts.
有效的战略可以减轻气候变化的影响。
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 /ˈstɔːrɪdʒ/

storage

存储
Meaning
the action or method of storing something for future use
Example
The warehouse offers plenty of storage space.
仓库提供了大量的存储空间。
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 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.
B2 verb /ˈʃætər/

shatter

打碎
Meaning
To break suddenly into many small pieces.
Example
The glass will shatter if you drop it.
玻璃会碎掉，如果你把它摔下去。
B2 adjective/noun /staʊt/

stout

强壮 / 粗壮
Meaning
Strong, thick, or heavily built; also a kind of dark beer
Example
The stout man lifted the heavy box with ease.
这个强壮的男人轻松地举起了沉重的箱子。
B2 noun /stæns/

stance

立场
Meaning
a person's attitude, opinion, or position on an issue
Example
The company took a strong stance on environmental protection.
公司在环境保护问题上采取了强硬立场。
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。
B2 noun /ˈʃɔːrt.kʌm.ɪŋ/

Shortcoming

缺陷; 不足; 缺点
Meaning
a fault or failure to meet a certain standard; a deficiency
Example
Despite his many talents, he has some shortcomings.
尽管他有许多才华，他仍然有一些短处。
B2 verb /sweɪ/

sway

摇摆
Meaning
To move or cause to move slowly or rhythmically back and forth; to influence someone's opinion or decision.
Example
The trees swayed gently in the breeze.
树木在微风中轻轻摇曳。
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 /sərˈvaɪvər/

Survivor

一个幸存下来的人，特别是指在其他人死去后仍然活着的人
Meaning
a person who survives, especially a person remaining alive after an event in which others have died
Example
She is a cancer survivor who now helps other patients.
她是一名癌症幸存者，现在帮助其他病人。
B2 noun ˌsɛlf.kənˈtrəʊl

self-control

自我控制
Meaning
The ability to control one's emotions, behavior, and desires in order to obtain some reward, or avoid some punishment, typically in the longer term.
Example
Self-control is important for maintaining a balanced life.
自我控制对保持平衡的生活很重要。
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。
B2 noun /slɛdʒ/

sledge

雪橇
Meaning
a vehicle for traveling over snow, often pulled by animals
Example
The children rode a sledge down the snowy hill.
孩子们从雪山上滑下了雪橇。
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。
B2 noun ˌsensɪˈtɪvɪti

sensitivity

敏感性
Meaning
The quality or condition of being sensitive; responsiveness to stimuli.
Example
Bose proved plant sensitivity through experiments.
博斯通过实验证明了植物的敏感性。
B2 adjective /ˌsʌp.lɪˈmen.tər.i/

Supplementary

补充的; 附加的; 额外的
Meaning
completing or making an addition to something; additional; extra
Example
Students need to buy supplementary books for the course.
学生需要为课程购买补充书籍。
B2 noun /ˈspɒnsər/

sponsor

赞助商
Meaning
a person or organization that provides funds for a project or activity in exchange for publicity or support
Example
The company became the main sponsor of the event.
公司成为了活动的主要赞助商。
B2 noun ˌsænɪˈteɪʃən

sanitation

卫生
Meaning
Conditions relating to public health, especially the provision of clean drinking water and adequate sewage disposal.
Example
Good sanitation practices are key to preventing infestations.
良好的卫生实践是防止侵扰的关键。
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 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。
B2 noun /ˈspəʊksmən/

spokesman

发言人
Meaning
a person who speaks on behalf of others, especially for a group or organization
Example
The spokesman addressed the crowd during the rally.
发言人在集会中向人群讲话。
B2 adjective /senˈseɪʃənəl/

Sensational

震撼的; 极其印象深刻的
Meaning
causing great excitement or shock; extremely impressive
Example
The sensational performance left the audience speechless.
这场震撼的表演让观众哑口无言。
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 noun /ˈʃɔːr.tɪdʒ/

Shortage

短缺
Meaning
a lack or deficiency of something that is needed or expected
Example
There is a severe water shortage in the region.
该地区严重缺水。
B2 verb /stæk/

stack

Meaning
to arrange things in a neat pile or one on top of another
Example
He stacked the books neatly on the shelf.
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。
B2 verb /stɜːr/

stir

搅拌
Meaning
to mix or move something in a circular motion, especially in liquid
Example
She stirred the soup to make sure it didn't burn.
她搅拌汤，以确保它不会烧焦。
B2 adjective sɪˈvɪər

severe

严重的
Meaning
Very great; intense or extreme in degree.
Example
Without action, climate change impacts will become severe.
如果没有行动，气候变化的影响将变得严重。
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 verb /səkˈsiːdɪŋ/

succeeding

随后的 / 后续的
Meaning
coming after or following in order; continuing to succeed
Example
In the succeeding years, the company expanded rapidly.
在随后的几年里，公司迅速扩展。
B2 verb /sɪp/

sip

小口喝
Meaning
to drink in small quantities; to taste carefully
Example
She sipped her tea slowly while reading the newspaper.
她一边读报纸一边慢慢地小口喝茶。
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。
B2 noun /ˈsɪblɪŋ/

sibling

兄弟姐妹
Meaning
A brother or sister.
Example
She has three siblings, two brothers and one sister.
她有三个兄弟姐妹，两个兄弟和一个妹妹。
B2 noun /səbˈmɪʃən/

submission

提交, 顺从
Meaning
the act of yielding to authority or presenting something for consideration
Example
Her submission of the report was appreciated by the manager.
她提交的报告受到了经理的赞赏。
B2 noun/verb /ˈsæd.əl/

saddle

马鞍; 使某人承担责任
Meaning
A seat fastened on the back of a horse for riding; to burden someone with a responsibility.
Example
He saddled the horse before going for a ride.
他在骑马之前给马鞍上鞍。
B2 noun /ˈsæb.ə.tɑːʒ/

Sabotage

破坏
Meaning
deliberate destruction of equipment or disruption of activities
Example
The factory was shut down due to an act of sabotage.
由于破坏行为，工厂被关闭。
B2 adjective səˈfɪs.tɪ.keɪ.tɪd

sophisticated

复杂的
Meaning
Having great knowledge or experience of the world and knowing about fashion, culture, and other things that people think are socially important; highly developed or complex.
Example
Sophisticated designs enhance aesthetics.
复杂的设计提升了美学。
B2 noun /ˈstiː.mər/

Steamer

蒸汽船
Meaning
a ship or boat powered by steam engines
Example
The old steamer crossed the river slowly.
老蒸汽船慢慢地渡过了河。
B2 verb /səˈsteɪn/

sustain

维持
Meaning
To support, maintain, or keep something going over time.
Example
The team worked hard to sustain their success.
团队努力工作以维持他们的成功。
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。
B2 noun ˈsʌbˌaɪtəlz

subtitles

字幕
Meaning
Captions displayed at the bottom of a movie or television screen that translate or transcribe the dialogue or narrative.
Example
Use subtitles for better understanding.
使用字幕以更好地理解。
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。
B2 noun /sɔːrd/

Sword

剑
Meaning
a weapon with a long metal blade and a handle, used for fighting
Example
The knight drew his sword to defend the castle.
骑士拔出了剑来保护城堡。
B2 adjective /ˈstɑː.ri/

Starry

星光灿烂的; 闪亮的;
Meaning
full of stars; shining like stars; relating to stars
Example
We enjoyed the starry night sky while camping in the mountains.
我们在山区露营时，享受着星光灿烂的夜空。
B2 adjective /səˈraʊndɪŋ/

surrounding

周围的
Meaning
located all around a particular place or thing; nearby
Example
The surrounding hills were covered in mist.
周围的山丘被雾气覆盖。
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 adjective /ˈstæt.ɪk/

static

静态
Meaning
Lacking in movement, action, or change; stationary.
Example
Static ideas hinder progress.
静态的想法阻碍了进步。
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。
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 /sɪnˈserɪti/

Sincerity

真诚
Meaning
the quality of being free from pretense or deceit; honesty
Example
His sincerity in apologizing was evident to everyone.
他在道歉时的真诚对所有人都显而易见。
B2 noun /ˈsɛnsər/

sensor

幸福
Meaning
a device that detects or measures a physical property and records, indicates, or responds to it
Example
The motion sensor turned on the light automatically.
当她获得奖项时，她无法掩饰自己的幸福。
B2 noun səˌsteɪ.nəˈbɪl.ɪ.ti

sustainability

可持续性
Meaning
The ability to be maintained at a certain rate or level; the avoidance of the depletion of natural resources in order to maintain ecological balance.
Example
Sustainability ensures long-term environmental health.
可持续性确保长期环境健康。
B2 verb /sæk/

sack

解雇
Meaning
to dismiss from a job; to put something in a sack
Example
The company sacked him for poor performance.
公司因为表现不佳解雇了他。
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 /ˈstʌf.i/

Stuffy

缺乏新鲜空气; 通风不良; 态度正式和保守
Meaning
lacking fresh air; poorly ventilated; formal and conservative in attitude
Example
The room was stuffy and needed fresh air.
房间里缺乏新鲜空气，需要新鲜空气。
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。
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。
B2 noun /stəˈtɪstɪks/

statistics

统计
Meaning
the practice or science of collecting and analyzing numerical data
Example
The statistics showed an increase in the number of users last year.
统计数据显示，去年用户数量有所增加。
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。
B2 verb, noun /ʃeɪv/

shave

刮胡子
Meaning
To remove hair from the body, typically using a razor; the act of removing hair
Example
He likes to shave every morning before work.
他喜欢每天上班前刮胡子。
B2 noun /ˈsikwəl/

Sequel

续集
Meaning
a published, broadcast, or recorded work that continues the story or develops the theme of an earlier one; something that takes place after or as a result of an earlier event
Example
The movie sequel was even more successful than the original.
这部电影的续集比原作更成功。
B2 verb /ˈstʌmbəl/

stumble

绊倒
Meaning
to trip or lose balance while walking or running; to make a mistake or falter
Example
He stumbled on the uneven pavement.
他在人行道上绊倒了。
B2 noun /ˈskriːnɪŋ/

screening

筛查或放映
Meaning
the act of examining or testing people to detect disease or evaluate suitability; a showing of a movie or program
Example
The hospital offered free health screening for all employees.
医院为所有员工提供了免费的健康筛查。
B2 noun /səˈspɛnʃən/

suspension

停赛
Meaning
The act of temporarily stopping something; also refers to a system in vehicles that absorbs shock.
Example
The player received a three-game suspension for misconduct.
该球员因不当行为被禁赛三场。
B2 noun /sliːv/

Sleeve

袖子
Meaning
the part of a garment that covers the arm
Example
She rolled up her sleeves before starting to cook.
她在开始做饭前卷起了袖子。
B2 noun /ˈsɑːrˌkæzəm/

sarcasm

讽刺
Meaning
The use of irony to mock or convey contempt.
Example
His sarcasm often made people laugh but sometimes offended them.
他的讽刺经常让人发笑，但有时也会冒犯他们。
B2 noun səbˈstænʃəl ˈɪmpækt

substantial impact

重大影响
Meaning
A significant, considerable, and meaningful effect or influence.
Example
Substantial impact is possible even with a few hours of volunteering.
即使是几个小时的志愿者工作，也能产生重大影响。
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。
B2 noun /stəˈbɪl.ə.ti/

Stability

稳定性
Meaning
the state of being stable; firmness; steadiness
Example
Political stability is essential for economic growth.
政治稳定对经济增长至关重要。
B2 adjective /səkˈsɛsɪv/

Successive

连续的; 连续的
Meaning
following one after the other in order; consecutive
Example
The team won three successive matches.
球队赢得了三场连续的比赛。
B2 verb /ˈspɛʃəˌlaɪz/

specialize

专攻
Meaning
to focus on a particular subject or activity and become an expert in it
Example
He decided to specialize in cardiology.
他决定专攻心脏病学。
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 verb, noun /stæb/

stab

刺伤
Meaning
to pierce or wound with a pointed weapon or object
Example
He was stabbed in the back during the altercation.
他在争执中背部被刺伤。
B2 noun /sɪˈver.ə.ti/

Severity

严重性; 严厉; 强度
Meaning
the quality of being extremely serious or harsh; intensity of something bad
Example
The severity of the storm caused widespread damage across the city.
风暴的严重性在整个城市造成了广泛的破坏。
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。
B2 verb ˈsiːlɪŋ

sealing

封闭，密封
Meaning
The action of closing or blocking something to prevent entry or escape.
Example
Sealing cracks in the walls can prevent pests from entering.
密封墙壁上的裂缝可以防止害虫进入。
B2 noun /spekˈteɪtər/

Spectator

观众
Meaning
a person who watches at a show, game, or other event; an observer
Example
The stadium was filled with excited spectators.
体育场坐满了兴奋的观众。
B2 adjective /ˈstuː.di.əs/

Studious

学霸; 专心学习
Meaning
characterized by diligent study; devoted to learning
Example
She is a studious student who spends hours in the library.
她是一个学霸，常常在图书馆待上好几个小时。
B2 verb /spɪn/

spin

旋转
Meaning
To turn around quickly or cause something to rotate
Example
The dancer began to spin gracefully on the stage.
舞者开始在舞台上优雅地旋转。
B2 noun /ˈskɛlɪtən/

skeleton

骷髅
Meaning
The internal framework of bones that supports the body of a human or animal.
Example
The teacher showed the students a human skeleton in the biology class.
老师在生物课上向学生们展示了一个人类的骷髅。
B2 noun /skɑːr/

Scar

疤痕
Meaning
a mark left on the skin after a wound has healed; lasting emotional damage
Example
The accident left a permanent scar on his forehead.
事故在他额头上留下了永久的伤疤。
B2 adjective ˌsɪm.əlˈteɪ.ni.əs

simultaneous

同时
Meaning
Occurring, operating, or done at the same time.
Example
Simultaneous crop failures affect global food supply.
同时的作物失败影响全球食品供应。
B2 noun /ˈsleɪvəri/

slavery

Meaning
the system or state of being owned and forced to work for someone else
Example
Slavery was abolished in most countries in the 19th century.
B2 noun /ˌsuːvəˈnɪər/

Souvenir

纪念品
Meaning
a thing that is kept as a reminder of a person, place, or event; a memento
Example
I bought a small souvenir from the gift shop.
我在礼品店买了一个小纪念品。
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 /spaɪn/

Spine

脊柱; 结构的中央支撑
Meaning
the backbone or vertebral column of a vertebrate; the central support of a structure
Example
She injured her spine in the accident.
她在事故中伤了脊柱。
B2 noun /ˈsɛm.ɪ.nɑːr/

seminar

研讨会
Meaning
A meeting for discussion or training, especially in an academic setting.
Example
The professor invited all students to attend the seminar on climate change.
教授邀请所有学生参加关于气候变化的研讨会。
B2 noun /ˈsaɪd.laɪn/

sideline

副业
Meaning
An activity done in addition to one's main job or area of work.
Example
The sideline discussions led to mutual understanding.
副线讨论促进了相互理解。
B2 verb /stɪŋ/

sting

刺痛
Meaning
to pierce with a sharp point; to cause sharp pain
Example
The bee stung him on his arm while he was gardening.
蜜蜂在他园艺时刺伤了他的手臂。
B2 noun (plural) /skræps/

scraps

剩菜
Meaning
Small pieces left over from something; also small fights or quarrels.
Example
The dog ate the scraps from the table.
狗吃了桌子上的剩菜。
B2 noun/verb /swɔːrm/

swarm

蜂群
Meaning
A large group of insects or people moving together.
Example
A swarm of bees surrounded the tree.
一群蜜蜂围绕着树。
B2 noun ˌspɛk.jʊˈleɪ.ʃən

speculation

投机
Meaning
Investment in stocks, property, or other ventures in the hope of gain but with the risk of loss.
Example
Stock market speculation can lead to high volatility.
股市投机可能导致高波动性。
B2 verb /ˈsʌmən/

summon

Meaning
To order someone to come or to gather courage or strength.
Example
The king summoned his advisors to the court.
B2 verb /stʌn/

stun

震惊, 使昏迷
Meaning
to shock or surprise someone greatly; to knock someone unconscious or dazed
Example
The news of her sudden resignation stunned everyone.
她突然辞职的消息让大家都震惊了。
B2 noun /ˈsiː.mən/

Seaman

海员
Meaning
a person who works on a ship; sailor
Example
The experienced seaman navigated the ship through the storm.
经验丰富的海员在风暴中导航。
B2 verb /ˈsuːpərvaɪz/

supervise

监督
Meaning
to watch and direct a person or activity to ensure things are done correctly
Example
The teacher supervises students during the exam.
老师在考试期间监督学生。
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。
B2 noun/verb /skræp/

scrap

碎片 / 丢弃
Meaning
A small piece of something; to discard or get rid of something.
Example
He used a scrap of paper to jot down the number.
他用一小片纸写下了那个号码。
B2 adjective /ˌsɪstəˈmætɪk/

systematic

系统的
Meaning
Done or acting according to a fixed plan or system; methodical.
Example
The company took a systematic approach to solving the issue.
公司采取了系统的方法来解决问题。
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 /ˌsuː.pərˈstɪʃ.ən/

Superstition

迷信
Meaning
a belief or practice considered irrational or supernatural
Example
Breaking a mirror brings seven years of bad luck is a common superstition.
打破镜子带来七年的厄运，这是一种常见的迷信。
B2 adjective /ˌsuː.pəˈfɪʃ.əl/

superficial

表面
Meaning
Existing or occurring at or on the surface; not thorough or deep.
Example
His understanding of the subject was rather superficial.
他对这个主题的理解相当表面。
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。