A2 adverb /ˈsʌm.deɪ/

someday

某天

Meaning

at some time in the future

Example

Someday, I want to travel the world.

某天，我想环游世界。

A2 noun /saɪt/

sight

视力

Meaning

the ability to see or something that is seen

Example

The sight of the sunset took her breath away.

日落的景象让她屏住了呼吸。

B2 adjective /ˈsoʊloʊ/

solo

独奏

Meaning

performed by one person alone; a single performance

Example

She decided to perform a solo dance at the talent show.

她决定在才艺表演中做独舞表演。

B1 adverb /spəˈsɪfɪkli/

specifically

特别地

Meaning

in a clear and exact way

Example

He was specifically asked to handle the finances.

他被特别要求处理财务。

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 /ʃiːt fɪʃ/

Sheat-fish

鲶鱼

Meaning

A large freshwater catfish with a broad flat head and long barbels

Example

The sheat-fish is one of the largest freshwater fish in South Asia.

鲶鱼是南亚最大的淡水鱼之一。

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。

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。

B1 noun, verb /skiːm/

scheme

计划 / 阴谋

Meaning

a plan or arrangement, especially one that is secret or dishonest

Example

They devised a scheme to cheat investors.

他们制定了一个计划，欺骗投资者。

B2 noun /səkˈsɛʃ.ən/

succession

生态演替

Meaning

The process of ecological change in which one community of organisms is gradually replaced by another.

Example

Forest succession occurs when old ecosystems are replaced by new ones.

森林演替发生在旧的生态系统被新的生态系统取代时。

A1 noun /stɑːr/

Star

星星

Meaning

a fixed luminous point in the night sky that produces light and heat through nuclear fusion

Example

Thousands of stars are visible in the clear night sky.

数千颗星星在清澈的夜空中可见。

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。

C1 adjective ˈsek.tər spəˈsɪf.ɪk

sector-specific

行业特定

Meaning

Relating to or designed for a particular sector or industry.

Example

Sector-specific policies attract targeted investments.

行业特定的政策吸引了定向投资。

C1 adjective /ˈstʌm.pi/

Stumpy

矮胖

Meaning

short and thick; having a short, thick appearance

Example

The stumpy little dog wagged its tail enthusiastically.

那只矮胖的小狗兴奋地摇着尾巴。

C1 noun /ˈstɪmjʊlənt/

stimulant

兴奋剂

Meaning

A substance that raises levels of physiological or nervous activity in the body.

Example

Coffee is a common stimulant that helps people stay awake.

咖啡是一种常见的兴奋剂，帮助人们保持清醒

C2 noun /ˈsɒfɪzəm/

sophism

诡辩

Meaning

a clever but misleading argument; fallacious reasoning

Example

The politician's speech was full of sophism designed to mislead voters.

政治家的演讲充满了旨在误导选民的诡辩。

C2 verb /skwɛltʃ/

squelch

Meaning

to make a soft sucking sound, such as when walking on mud; to suppress or silence

Example

His boots squelched in the wet ground.

C1 adjective /steɪd/

staid

严肃，受尊敬的

Meaning

Serious, respectable, and unadventurous.

Example

He came from a staid family background.

他来自一个严肃的家庭。

C2 noun /ˌʃæŋɡriˈlɑː/

shangri-la

虚构的乐园

Meaning

a remote, beautiful, imaginary place where life is perfect and peaceful

Example

They described the island as a modern-day Shangri-La.

他们将这个岛屿描述为现代版的香格里拉。

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。

C2 noun /slaɪt/

sleight

技巧

Meaning

Skill or dexterity, especially in performing tricks.

Example

The magician amazed the crowd with his sleight of hand.

魔术师用他的技巧惊艳了观众。

B2 verb /sniːk/

sneak

Meaning

to move quietly and secretly to avoid being noticed

Example

He tried to sneak into the house without waking anyone.

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。

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。

A2 noun, verb /ˈsɛntəns/

sentence

句子; 刑期

Meaning

A set of words that expresses a complete thought; or a punishment given by a court of law.

Example

The judge gave him a five-year prison sentence.

法官给了他五年监禁的刑期。

B1 noun /saɪt/

site

位置

Meaning

a location or place, often used for a specific purpose, such as a construction site or a website

Example

The construction site is ready for the next phase of the project.

建设现场已准备好进入项目的下一阶段。

A2 noun /ˈsuːt.keɪs/

suitcase

行李箱

Meaning

A portable rectangular container for carrying clothes and personal items when traveling

Example

She packed her clothes into a suitcase for the trip.

她把衣服打包到旅行用的行李箱里。

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 /ˌsʌb.təˈreɪ.ni.ən/

subterranean

地下

Meaning

Existing, occurring, or done under the earth's surface.

Example

Subterranean water sources help sustain agriculture.

地下水源有助于维持农业。

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 noun /ˈstɛriəˌtaɪp/

stereotype

刻板印象

Meaning

A widely held but oversimplified and fixed idea of a particular type of person or thing.

Example

It is a stereotype that all gamers are antisocial.

所有玩家都是反社会的，这是一种刻板印象。

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 /ˈsɒnɪt/

sonnet

十四行诗

Meaning

A poem of 14 lines using formal rhyme schemes, often about love.

Example

Shakespeare wrote many famous sonnets about love and beauty.

莎士比亚写了许多关于爱情与美丽的著名十四行诗。

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。

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.

C2 noun /sɪˈnɛrəsɪs/

syneresis

协同作用

Meaning

The contraction of two adjacent vowels into a single syllable or the separation of liquid from a gel.

Example

The yogurt showed syneresis when liquid separated on top.

当液体在上面分离时，酸奶表现出协同作用。

B2 noun /stɑːˈveɪ.ʃən/

Starvation

饥饿

Meaning

suffering or death caused by lack of food; extreme hunger

Example

Many people died of starvation during the famine.

许多人在饥荒期间死于饥饿。

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 adjective ˌsʌr.əpˈtɪʃ.əs

surreptitious

秘密

Meaning

Kept secret, especially because it would not be approved of; done stealthily.

Example

She took a surreptitious glance at his notes.

她偷偷地看了一眼他的笔记。

B2 noun ˈskeə.sɪ.ti

scarcity

稀缺

Meaning

The state of being scarce or in short supply; shortage.

Example

Water scarcity threatens agriculture.

水资源稀缺威胁农业。

C2 adjective /sæŋˈɡwɪniəs/

sanguineous

与血液相关的

Meaning

Relating to blood; bloody.

Example

The surgeon examined the sanguineous discharge from the wound.

外科医生检查了伤口的血腥分泌物。

C2 adjective /səˈræfɪk/

seraphic

天使般的

Meaning

Of or like a seraph; angelic, pure, and blissful.

Example

She gave him a seraphic smile that calmed his fears.

她给了他一个天使般的微笑，安抚了他的恐惧。

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。

C1 noun/verb /ˈsuː.tʃər/

suture

缝合

Meaning

A stitch or row of stitches holding together the edges of a wound or surgical incision.

Example

The doctor used a suture to close the wound.

医生使用了缝合线来闭合伤口。

B1 noun /ˈsmoʊkər/

smoker

吸烟者

Meaning

A person who smokes tobacco or other substances

Example

He is a heavy smoker and tries to quit every year.

他是一个吸烟者，每年都试图戒烟。

B2 noun /ˈsɜːvɪŋ/

serving

份

Meaning

a portion of food for one person; the act of giving food or drink to someone

Example

He ate a large serving of rice and curry.

他吃了一大份米饭和咖喱。

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 noun /stɛlθ/

stealth

隐秘, 安静地移动

Meaning

The act of moving, doing, or achieving something quietly and secretly.

Example

The cat moved with stealth towards its prey.

猫悄悄地向它的猎物走去。

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 /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。

B2 verb /ˈstrɛŋkθən/

strengthen

增强

Meaning

To make or become stronger.

Example

Communication can strengthen bonds between people.

沟通可以增强人们之间的联系。

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 /ˌsuːpərɪmˈpoʊz/

superimpose

叠加

Meaning

to place one thing on top of another so that both can be seen

Example

The editor superimposed text over the image.

编辑将文本叠加在图片上。

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。

B2 noun /ˈʃɪpɪŋ/

shipping

运输

Meaning

the process of transporting goods

Example

The shipping of the products was delayed due to weather conditions.

由于天气原因，产品的运输被延迟了。

C2 noun /ˈskɜː.vi/

scurvy

坏血病

Meaning

A disease caused by a deficiency of vitamin C, leading to weakness, gum disease, and bleeding.

Example

Sailors often suffered from scurvy during long sea voyages without fresh fruits.

在没有新鲜水果的长时间海上航行中，水手们经常患上坏血病。

C1 verb/noun /snɑːrl/

snarl

咆哮，堵塞

Meaning

to growl aggressively with bared teeth; a tangle or mess

Example

The dog snarled at the stranger near the gate.

狗对门口的陌生人咆哮。

C1 adjective /stiːpt/

steeped

浸透

Meaning

Completely surrounded by or filled with a particular quality, influence, or experience.

Example

The town is steeped in history and tradition.

这座城市充满了历史和传统。

C1 noun /sɪˈtɑːr/

Sitar

锡塔尔

Meaning

a traditional Indian stringed musical instrument with a long neck and resonating body

Example

The sitar creates beautiful ragas in Indian classical music.

锡塔尔在印度古典音乐中创造美丽的拉嘎。

C2 noun /ˈstiː.vəˌdɔːr/

stevedore

装卸工

Meaning

A person employed to load and unload cargo from ships.

Example

The stevedores worked tirelessly to unload the cargo before dawn.

装卸工们不知疲倦地工作，直到黎明前卸下货物。

A2 noun /sɔːlt/

Salt

盐

Meaning

white crystalline substance used for seasoning food; sodium chloride

Example

Please add some salt to the soup to enhance its flavor.

请在汤里再加一些盐以提升风味。

B2 noun /ˈsɛtlər/

settler

定居者

Meaning

a person who settles in a new area or land

Example

The settlers arrived in the new town and started building homes.

定居者们抵达新城市并开始建造房屋。

A2 noun /ˈsɒftweə/

software

软件

Meaning

the programs and other operating information used by a computer

Example

He installed the software to enhance the performance of his computer.

他安装了软件以提高计算机的性能。

C2 verb /ˈstræɡəl/

straggle

不规则地移动

Meaning

To move or spread in an irregular, scattered, or untidy way.

Example

The children began to straggle behind on the long hike.

孩子们开始在漫长的徒步旅行中掉队。

A2 noun /sɔːs/

Sauce

酱

Meaning

a liquid or semi-liquid substance served with food to add moisture and flavor

Example

She added tomato sauce to her pasta.

她在她的意大利面上加了番茄酱。

B1 noun /stoʊv/

Stove

炉子

Meaning

a kitchen appliance used for cooking food by applying heat

Example

She cooked dinner on the gas stove.

她在煤气炉上做晚餐。

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。

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。

C2 adjective /ˈsʌpliənt/

suppliant

恳求者

Meaning

Humbly or earnestly asking for something, especially from a person in authority.

Example

The suppliant man begged for mercy at the king's feet.

恳求者在国王的脚下乞求怜悯。

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。

C1 adjective /ˈsʌlən/

sullen

闷闷不乐

Meaning

bad-tempered and gloomy; silently resentful

Example

She gave him a sullen look and walked away.

她给了他一个闷闷不乐的眼神，然后走开了。

A2 noun /ˈsoʊʃəl ˈmiːdiə/

social media

社交媒体

Meaning

Websites and applications that enable users to create and share content or to participate in social networking.

Example

Social media often causes delays.

社交媒体经常造成延迟。

A2 noun, verb, adjective /saʊnd/

sound

Meaning

a sensation perceived by the ear; to make or cause to make a noise; in good condition

Example

The bell sounded across the valley.

C2 adjective /ˈsmɑːrmi/

smarmy

奉承 / 虚伪的礼貌

Meaning

Excessively flattering or ingratiating, often insincerely.

Example

The salesman gave a smarmy pitch that felt fake.

销售员做了一个让人觉得虚假的奉承推销。

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。

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。

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。

A2 adjective /skɛrd/

scared

害怕的

Meaning

feeling afraid or worried

Example

She was scared of the dark.

她害怕黑暗。

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。

C1 verb /skɔːrtʃ/

scorch

烧焦

Meaning

to burn the surface of something slightly

Example

The fire scorched the walls of the building.

火焰烧焦了建筑物的墙壁。

C1 noun /ˌspɒn.təˈneɪ.ɪ.ti/

spontaneity

自发性

Meaning

The quality of being spontaneous; natural and unplanned behavior.

Example

His spontaneity makes him a great conversationalist.

他的自发性使他成为一个很棒的对话者。

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。

A1 verb /spik/

speak

说

Meaning

to say words; to communicate verbally

Example

She can speak three languages fluently.

她能流利地说三种语言。

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。

C1 noun /ˈstjuːpər/

stupor

昏迷

Meaning

a state of near-unconsciousness or insensibility

Example

He remained in a stupor after hearing the shocking news.

他在听到令人震惊的消息后陷入昏迷。

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。

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 noun/verb /snɛər/

snare

陷阱

Meaning

a trap for catching animals; to catch or trap

Example

The hunter set a snare to catch rabbits.

猎人设置了一个陷阱来捕捉兔子。

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。

B2 adjective ˈstrʌktʃərd

structured

结构化

Meaning

Having a clear organization or framework; systematically arranged.

Example

A structured execution plan is crucial for success.

一个结构化的执行计划对于成功至关重要。

A1 verb /sɪt/

sit

坐

Meaning

to rest in a seated position; to be located

Example

Please sit down and make yourself comfortable.

请坐下并让自己舒服。

A2 noun /ʃɪp/

Ship

船

Meaning

a large watercraft that travels the world's oceans and seas

Example

The cargo ship departed from the port at dawn.

货船在黎明时分离开了港口。

C2 adjective /ˈsæpɪd/

sapid

美味的

Meaning

Having a pleasant taste; flavorful.

Example

The chef prepared a sapid dish that delighted everyone at the table.

厨师准备了一道美味的菜肴，令桌上的每个人都非常喜欢。

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。

C1 noun /sɪlk klɔːθ/

Silk cloth

丝绸布料

Meaning

fabric made from natural fibers produced by silkworms

Example

The bride wore a beautiful dress made of silk cloth.

新娘穿着一件美丽的丝绸布料做的裙子。

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。

B2 verb /straɪd/

stride

大步走；取得进展

Meaning

to walk with long, decisive steps; to make progress

Example

She strode confidently across the stage.

她自信地走过舞台。

C1 noun /ˈsɛntɪnəl/

sentinel

哨兵

Meaning

A soldier or guard whose job is to stand and keep watch.

Example

A sentinel stood at the entrance of the camp.

一个哨兵站在营地的入口处。

B2 verb /stɪə(r)/

steer

操控

Meaning

to guide or control the movement of a vehicle, vessel, or person

Example

He steered the car carefully through the narrow street.

他小心地把车开过狭窄的街道。

A2 noun /ˈsiːkrət/

secret

Meaning

something that is kept or meant to be kept unknown or unseen by others

Example

He told me a secret about his childhood.

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 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 /ˈskælpəl/

scalpel

手术刀

Meaning

A small and extremely sharp bladed instrument used for surgery and dissection.

Example

The surgeon carefully used a scalpel to make the first incision.

外科医生小心地使用手术刀进行第一次切割。

B1 verb /stæmp/

stamp

Meaning

To bring down (one's foot) heavily on the ground; to imprint a mark or seal.

Example

She stamped her foot in frustration.

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。

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。

B2 noun /səbˈskrɪp.ʃən/

Subscription

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 /ˈseɡ.mənt/

Segment

部分; 段; 切分的部分

Meaning

each of the parts into which something is divided; a section or portion

Example

The orange was divided into eight segments.

橙子被分成了八个部分。

C1 adjective /səbˈdʒɛktɪv/

subjective

主观的

Meaning

based on personal feelings, tastes, or opinions rather than facts

Example

Beauty is often considered a subjective concept.

美丽通常被视为一个主观的概念。

C1 verb, adjective, noun /spruːs/

spruce

整理 / 一种树

Meaning

to make neat or tidy in appearance; also refers to an evergreen tree

Example

He spruced up his room before the guests arrived.

他在客人到达之前整理了他的房间。

C2 noun /sfɪˈrɒmɪtər/

spherometer

球形仪

Meaning

An instrument used for measuring the curvature of spherical surfaces.

Example

The scientist used a spherometer to measure the lens curvature.

科学家使用了一个球形仪来测量透镜的曲率。

A2 noun /ˈsɪstəm/

system

系统

Meaning

a set of connected parts forming a complex whole; an organized method

Example

The education system needs major reforms.

教育系统需要重大改革。

C2 noun /ˈskɔːrpiən fɪʃ/

Scorpion fish

蝎子鱼

Meaning

a type of fish with venomous spines that belongs to the family Scorpaenidae

Example

The scorpion fish has dangerous spines that can inject venom.

蝎子鱼有危险的刺，可以注入毒液。

A1 pronoun /ˈsʌmθɪŋ/

something

某事

Meaning

an unspecified or unknown thing

Example

I think something is wrong with my phone.

我觉得我的手机有些问题。

C1 noun səˈlɪnɪti ɪnˈtruːʒən

salinity intrusion

盐水入侵

Meaning

The movement of salt water into freshwater areas, typically affecting coastal regions.

Example

Salinity intrusion affects coastal regions.

盐水入侵影响沿海地区。

B2 adjective /ˈsɪnɪstər/

sinister

邪恶的

Meaning

Giving the impression that something harmful or evil is happening or will happen.

Example

The abandoned house had a sinister atmosphere.

那座废弃的房子有着邪恶的氛围。

C1 noun, verb /strænd/

strand

线 / 搁浅

Meaning

Noun: A single thin length of thread, wire, or similar. Verb: To leave someone or something without a way of moving or leaving.

Example

The storm stranded many tourists on the island.

暴风雨让许多游客滞留在岛上。

C1 adjective /ˈsɜːrvɪsəbl/

serviceable

可用

Meaning

fit for use; usable; in working order

Example

The old bicycle is still serviceable despite its age.

那辆旧自行车尽管年久失修，仍然可用。

B1 noun ˈstrʌɡ.əl

struggle

斗争

Meaning

A forceful or violent effort to get free of restraint or resist attack; a determined effort under difficult circumstances.

Example

The struggle for independence united the nation.

独立斗争使国家团结。

C1 verb /sɪˈkriːt/

secrete

分泌

Meaning

to produce and release a substance from a cell, gland, or organ

Example

The pancreas secretes insulin to regulate blood sugar levels.

胰腺分泌胰岛素以调节血糖水平。

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。