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A2 verb /prɪˈvent/

prevent

防止
Meaning
to stop something from happening; to keep from occurring
Example
Vaccination helps prevent many diseases.
疫苗接种有助于预防许多疾病。
A2 verb /bɪˈheɪv/

behave

表现
Meaning
to act in a particular way; to conduct oneself
Example
Children should behave well in school.
孩子们应该在学校里表现得很好。
A2 noun /streŋθ/

Strength

力量; 力气; 体力
Meaning
the quality or state of being physically strong; power or force
Example
Regular exercise helps build muscle strength.
规律的锻炼有助于增强肌肉力量。
A2 noun /haɪt/

height

高度
Meaning
the measurement of someone or something from base to top
Example
The height of the tower impressed the visitors.
塔的高度给游客留下了深刻的印象。
A2 verb /əˈraɪv/

arrive

到达
Meaning
to reach a destination; to come to a place
Example
The train will arrive at the station in ten minutes.
火车将在十分钟内到达车站。
A2 verb /dʒɔɪn/

join

加入
Meaning
to connect or combine; to become a member of something
Example
Would you like to join our team for the project?
你想加入我们的团队来做这个项目吗？
A2 verb /ˈdraɪvɪŋ/

driving

驾驶
Meaning
the act of controlling and operating a vehicle; guiding or motivating something forward
Example
She loves driving along the coast on weekends.
她喜欢在周末沿着海岸驾驶。
A2 noun /ɡəʊlz/

goals

目标
Meaning
Objectives or targets that someone aims to achieve.
Example
Achieving development goals requires cooperation.
实现发展目标需要合作。
A2 adjective, noun /ˈkloʊsər/

closer

更近，结束者
Meaning
more near in distance or relationship; someone or something that concludes an activity
Example
She moved closer to the window.
她走得更靠近窗户。
A2 adjective /ˈtʃɪə.fəl/

Cheerful

愉快的; 乐观的; 充满喜悦
Meaning
happy and optimistic; full of joy and good spirits; bright and lively
Example
She has a cheerful personality that brightens everyone's day.
她有一个愉快的个性，照亮了每个人的日子。
A2 noun /lʌk/

Luck

运气
Meaning
success or failure apparently brought by chance rather than through one's own actions
Example
She had good luck with her job interview.
她在面试中有好运气。
A2 noun /ˈvɪzɪtər/

visitor

游客
Meaning
a person who goes to see a place or someone for a short time
Example
The museum had many visitors last weekend.
博物馆上周末有很多游客。
A2 pronoun /huːˈɛvər/

whoever

无论谁
Meaning
any person who; no matter who
Example
Whoever wants to join the trip must register today.
无论谁想加入旅行，都必须今天注册。
A2 noun /ænt/

Ant

蚂蚁
Meaning
a small insect that lives in organized colonies and is known for hard work
Example
The ant carried a crumb that was twice its size.
这只蚂蚁搬动了一块比它大两倍的面包屑。
A2 adjective /ˈspænɪʃ/

spanish

西班牙语
Meaning
relating to Spain or the Spanish language
Example
She is fluent in Spanish and French.
她能流利地讲西班牙语和法语。
A2 noun /ˈbækɡraʊnd/

Background

背景
Meaning
the circumstances or situation that form the setting; a person's education, experience, or social circumstances
Example
She has a strong background in mathematics and computer science.
她在数学和计算机科学方面有着强大的背景。
A2 noun /mɛs/

mess

混乱
Meaning
A state of disorder or untidiness.
Example
The kids left the room in a complete mess.
孩子们把房间弄得一团糟。
A2 noun /waɪn/

wine

酒
Meaning
an alcoholic drink made from fermented grapes or other fruits
Example
They served a glass of red wine at the dinner.
他们在晚餐时提供了一杯红酒。
A2 noun /ˈkændi/

candy

糖果
Meaning
a sweet food made with sugar or chocolate, often in small pieces
Example
The children were excited to get candy on Halloween.
孩子们在万圣节兴奋地收到糖果。
A2 noun ˈbræntʃɪz

Branches

树枝
Meaning
A part of a tree that grows out from the trunk or from a bough.
Example
Family tree branches show the relationship between family members.
家族树的枝条展示了家人之间的关系。
A2 noun ˈɑːrɡjumənt

argument

争论
Meaning
A reason or set of reasons given with the aim of persuading others that an action or idea is right or wrong.
Example
His argument was based on majority.
他的争论基于多数。
A2 adverb, adjective, verb, noun /ˈfɔːrwərd/

forward

向前
Meaning
toward the front; to advance or send ahead; an onward position or direction
Example
The troops moved forward to secure the bridge.
部队向前移动以确保桥梁的安全。
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。
A2 noun /ˈfer.i.teɪl/

Fairy-tale

童话故事
Meaning
a children's story about magical and imaginary beings and lands
Example
Children love listening to fairy-tales before bedtime.
孩子们喜欢在睡觉前听童话故事。
A2 verb /bit/

beat

打
Meaning
to strike repeatedly; to defeat; to pulsate rhythmically
Example
Our team will beat theirs in the final match.
我们的团队将在决赛中击败他们。
A2 verb /ˈtʃeɪndʒɪŋ/

changing

变化
Meaning
The act of becoming different; ongoing process of change.
Example
The weather is changing rapidly.
天气在快速变化。
A2 noun /ˈriːdər/

reader

读者
Meaning
a person who reads or who is capable of reading
Example
She is a fast reader, finishing books in a day.
她是一个快速的读者，一天就能读完书。
A2 adjective /streɪndʒ/

strange

奇怪
Meaning
unusual or not normal
Example
It was strange to see him at the party after so long.
在这么久之后在派对上看到他真奇怪。
A2 verb /dɪˈskraɪb/

describe

描述
Meaning
to give an account of something in words, including details
Example
She described the scene vividly.
她生动地描述了场景。
A2 noun /ˈstændərd/

standard

Meaning
a level of quality or achievement, or a measure of comparison
Example
This car meets all the safety standards.
A2 noun /ˈmɪljən/

million

百万
Meaning
the number equivalent to one thousand thousand (1,000,000)
Example
The movie earned over a million dollars in its first week.
电影在第一周赚了超过一百万美元。
A2 adjective /əˈnɔɪd/

annoyed

恼火的
Meaning
feeling slightly angry or irritated
Example
She felt annoyed by the constant noise.
她对持续的噪音感到恼火。
A2 noun /truːθ/

Truth

真理; 诚实;
Meaning
the quality or state of being true; that which is true or in accordance with fact or reality
Example
The witness promised to tell the truth during the court hearing.
证人在法庭听证会上承诺说出真相。
A2 noun /ˈprɒd.ʌkt/

Product

产品
Meaning
something that is manufactured or produced; the result of a process
Example
The company launched a new product in the market.
公司在市场上推出了一款新产品。
A2 noun /ˈdrɔːər/

drawer

抽屉
Meaning
a box-shaped storage compartment that slides in and out of furniture
Example
She kept her jewelry in the top drawer of the dresser.
她把珠宝放在梳妆台的上层抽屉里。
A2 adjective /ˈɔː.dɪ.nər.i/

Ordinary

普通的; 常见的; 不特别的
Meaning
normal; usual; not special
Example
It was just an ordinary day at the office.
那只不过是办公室里的普通一天。
A2 noun /fəˈtɒɡrəfi/

photography

摄影
Meaning
the art or practice of taking and processing photographs
Example
She studied photography in college.
她在大学里学习了摄影。
A2 noun /ˈtʃer.i/

Cherry

樱桃
Meaning
a small round red or black fruit with a hard seed inside
Example
She picked fresh cherries from the tree in her garden.
她从花园的树上摘下了新鲜的樱桃。
A2 adjective /ˈjuːs.ləs/

Useless

无用
Meaning
having no beneficial purpose; not useful
Example
This broken computer is completely useless.
这个坏掉的电脑完全是无用的。
A2 pronoun /huːm/

whom

谁
Meaning
used to refer to the person or people that something is done to
Example
The man whom I met yesterday is my friend.
我昨天遇到的那个人是我的朋友。
A2 noun /ˈwɒʃ.ɪŋ məˌʃiːn/

Washing machine

洗衣机
Meaning
a machine for washing clothes and other textiles
Example
The washing machine broke down and needs repair.
洗衣机坏了，需要修理。
A2 adjective/adverb /ˈɒnˌlaɪn/

online

在线
Meaning
connected to or available through the internet
Example
I prefer shopping online rather than going to stores.
我更喜欢网上购物，而不是去商店。
A2 verb /swɪm/

swim

游泳
Meaning
to move through water using body movements
Example
I love to swim in the ocean during summer.
我喜欢在夏天在海洋中游泳。
A2 adverb /ˈev.ri.weər/

Everywhere

到处
Meaning
in all places; wherever you go
Example
The internet allows us to connect with people everywhere.
互联网让我们可以与到处的人连接。
A2 adverb; noun /ˌaʊtˈdɔːrz/

outdoors

在户外
Meaning
outside a building; the natural environment outside
Example
We spent the whole afternoon outdoors enjoying the fresh air.
我们整个下午都在户外享受新鲜空气。
A2 noun /ɪˈfekt/

Effect

效果; 结果; 后果
Meaning
a change that is a result or consequence of an action or other cause
Example
The new medicine had a positive effect on the patient's recovery.
新药物对患者的恢复产生了积极的效果。
A2 verb /pʊʃ/

push

推
Meaning
to exert force to move something away from oneself; to press against
Example
Push the button to ring the bell.
按下按钮以响铃。
A2 noun /ˈmʌʃ.ruːm/

Mushroom

蘑菇
Meaning
a type of fungus that can be eaten, often used in cooking
Example
The pizza was topped with fresh mushrooms.
披萨上撒上了新鲜的蘑菇。
A2 noun /ˈɑːrtɪst/

Artist

艺术家
Meaning
a person who creates art, especially paintings or drawings
Example
The artist painted a beautiful landscape.
艺术家画了一幅美丽的风景画。
A2 adverb /ˈwiːkli/

Weekly

每周
Meaning
happening or done once every week; every week
Example
I visit my grandmother weekly on Sundays.
我每个周日都去看望我的祖母。
A2 noun /flʌd/

Flood

洪水
Meaning
an overflow of a large amount of water beyond its normal limits
Example
The heavy rain caused a flood in the village.
暴雨导致村庄发生了洪水。
A2 adjective /mɪkst/

mixed

混合的
Meaning
consisting of different elements or having varied opinions or feelings
Example
The audience had mixed reactions to the film.
观众对电影的反应混合。
A2 noun /ˈroʊbɒt/

robot

机器人
Meaning
a machine capable of carrying out a complex series of actions automatically
Example
The factory uses robots to assemble cars efficiently.
工厂使用机器人高效地组装汽车。
A2 adjective /ˈtiːnˌeɪdʒ/

teenage

青少年
Meaning
relating to or characteristic of people aged between 13 and 19 years old
Example
She spent her teenage years in a small town.
她在一个小镇度过了她的青少年岁月。
A2 adjective /əˈwɛər/

aware

意识到
Meaning
having knowledge or perception of a situation or fact
Example
She is aware of the risks involved.
她意识到其中的风险。
A2 noun ˈɡʌvəmənt

government

政府
Meaning
The governing body of a nation, state, or community; the system by which a state or community is governed.
Example
The government rejected the demands.
政府拒绝了这些要求。
A2 adjective/adverb /ˈdeɪli/

daily

每日的
Meaning
happening every day
Example
She reads the newspaper daily.
她每天读报纸。
A2 verb /rɪˈlæks/

relax

放松
Meaning
to make or become less tense or anxious; to rest
Example
After a long day, she likes to relax with a good book.
经过一天的劳累，她喜欢拿一本好书放松一下。
A2 adverb /ˈnaʊədeɪz/

Now-a-days

如今; 现在
Meaning
at the present time; in these times
Example
Now-a-days, people prefer online shopping.
现在人们更喜欢在线购物。
A2 adjective /əˈveɪləbl/

available

可用的
Meaning
Able to be used, obtained, or accessed.
Example
The product is now available in all stores.
该产品现在在所有商店均可用。
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。
A2 noun /ˈkloʊðɪŋ/

clothing

衣服
Meaning
items worn to cover the body; apparel collectively
Example
Warm clothing is essential in winter.
冬天，保暖衣物是必不可少的。
A2 noun, verb /pəʊst/

post

邮寄
Meaning
a job or position, or to send something by mail
Example
She posted a letter to her friend yesterday.
她昨天给她的朋友邮寄了一封信。
A2 adjective /əˈlaɪv/

Alive

活着的; 不是死的; 充满生命和能量
Meaning
living; not dead; full of life and energy
Example
The old man is still alive and healthy.
那位老人仍然活着且健康。
A2 noun /rɪˈfrɪdʒ.ər.eɪ.tər/

Refrigerator

冰箱
Meaning
an appliance for keeping food and drinks cold
Example
Please put the milk in the refrigerator to keep it fresh.
请把牛奶放进冰箱里保持新鲜。
A2 adjective /ˈɡoʊldən/

Golden

金色
Meaning
having the color of gold; bright yellow
Example
The golden sunset painted the sky beautifully.
金色的日落把天空涂得美丽。
A2 noun /dɪˈpɑːrtmənt/

department

部门
Meaning
a division of a large organization such as a government, university, or company
Example
She works in the marketing department.
她在市场部门工作。
A2 noun /ˈlev.əl/

level

水平
Meaning
A position on a real or imaginary scale of amount, quantity, extent, or quality.
Example
Pollution levels must be reduced urgently.
污染水平必须紧急降低。
A2 noun /ˈdæm.ɪdʒ/

Damage

损害; 损失
Meaning
physical harm caused to something; injury or harm that reduces value or usefulness
Example
The storm caused significant damage to the coastal buildings.
暴风雨对沿海建筑物造成了重大损害。
A2 noun /ˈpeɪntɪŋ/

painting

画
Meaning
a picture or design made using paint
Example
The painting on the wall was created by a famous artist.
墙上的画是由一位著名艺术家创作的。
A2 adverb /ɪnˈstɛd/

instead

代替
Meaning
As an alternative or substitute.
Example
She didn’t buy the dress; instead, she chose a pair of shoes.
她没有买那件裙子; 反而她选择了一双鞋子。
A2 noun /brænd/

brand

品牌
Meaning
a type of product manufactured by a company under a particular name
Example
Nike is a popular brand of sportswear.
Nike 是一个受欢迎的运动服品牌。
A2 noun/verb /puːl/

pool

游泳池
Meaning
a small body of still water, or a game played in a rectangular table with balls
Example
The children swam in the pool all afternoon.
孩子们整个下午都在游泳池里游泳。
A2 adjective /ʌnˈkʌmf.tə.bəl/

Uncomfortable

不舒服
Meaning
causing or feeling slight pain or physical discomfort; making someone feel embarrassed, awkward, or anxious
Example
The chair was so uncomfortable that I couldn't sit in it for more than ten minutes.
这个椅子太不舒服了，我坐在上面超过十分钟就坐不下来了。
A2 adverb /jet/

Yet

直到现在; 还;
Meaning
up to now or a specified time; still; however; nevertheless
Example
He hasn't finished his homework yet.
他还没有完成作业。
A2 noun /ˈɛndɪŋ/

ending

结局
Meaning
the final part of something, such as a story, event, or period of time
Example
The movie had a surprising ending that no one expected.
这部电影有一个令人惊讶的结局，没人预料到。
A2 verb /riːˈsaɪ.kəl/

recycle

回收
Meaning
to process used materials so they can be used again instead of being thrown away
Example
We should recycle paper and plastic to reduce waste.
我们应该回收纸张和塑料，以减少废物。
A2 adverb /ˈhɑːd.li/

Hardly

几乎不; 几乎没有; barely
Meaning
scarcely; barely; almost not at all
Example
I could hardly believe what I was seeing.
我几乎不敢相信我所看到的。
A2 adjective /ˈæfrɪkən/

african

非洲的
Meaning
relating to Africa or its people
Example
She studied African culture in university.
她在大学学习了非洲文化。
A2 noun ˈsɜːrvɪs

service

服务
Meaning
An act of helping or doing work for someone.
Example
True education promotes the value of service to others.
真正的教育促进了对他人服务的价值。
A2 adjective /riːl/

Real

真实的; 真实的; 不是假的
Meaning
actually existing; genuine; not imaginary or fake
Example
This is a real diamond, not a fake one.
这是一个真实的钻石，不是假的。
A2 noun /laɪˈbrɛəriən/

librarian

图书管理员
Meaning
a person who manages, organizes, and assists users in a library
Example
The librarian helped me find a rare history book.
图书管理员帮我找到了一本罕见的历史书。
A2 verb /prɪˈtɛnd/

pretend

假装
Meaning
To act as if something is true when it is not.
Example
The children pretended to be superheroes.
孩子们假装成超级英雄。
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。
A2 noun /bɜːrθ/

Birth

出生; 起源; 开端;
Meaning
the emergence of a baby or young from the body of its mother; the beginning or origin of something
Example
The birth of their first child was a joyful moment.
他们第一个孩子的出生是一个喜悦的时刻。
A2 noun /ˈfiːtʃər/

feature

特点
Meaning
a distinctive attribute or aspect of something; a characteristic
Example
The new phone has a unique camera feature.
新手机具有独特的相机特点。
A2 adverb /fɔːrˈɛvər/

forever

永远
Meaning
For all future time; for always.
Example
She promised to love him forever.
她承诺永远爱他。
A2 noun/verb /ˈbætəl/

battle

战斗
Meaning
A fight between armed forces or a struggle to achieve or resist something.
Example
The soldiers prepared for the final battle.
士兵们为最后的战斗做好了准备。
A2 adjective /ˈwɜːrkɪŋ/

working

工作
Meaning
engaged in physical or mental effort to achieve a goal or task
Example
She is working on her project right now.
她正在进行她的项目工作。
A2 noun /bentʃ/

Bench

长凳
Meaning
a long seat for several people, typically made of wood or stone
Example
The students sat on the bench.
学生们坐在长凳上。
A2 noun /ˈwʌndər/

wonder

奇迹
Meaning
a feeling of amazement and admiration, caused by something beautiful, remarkable, or unfamiliar
Example
The view from the mountain was a true wonder.
从山顶看到的景色真是一个奇迹。
A2 noun /pɪn/

pin

别针
Meaning
a small thin piece of metal used to fasten or hold things together
Example
She used a pin to attach the note to the board.
她用别针把纸条固定在黑板上。
A2 verb /rɪˈkwaɪər/

require

需要
Meaning
to need something; to demand or insist on
Example
This job requires excellent communication skills.
这份工作要求出色的沟通技巧。
A2 noun /nek/

Neck

脖子
Meaning
the part of the body connecting the head to the shoulders
Example
She wore a beautiful necklace around her neck.
她在脖子上戴着一条美丽的项链。
A2 noun /ˈdʒækɪt/

Jacket

夹克
Meaning
a piece of clothing worn on the upper body, typically having sleeves and fastening down the front
Example
He wore a leather jacket to protect himself from the cold wind.
他穿了一件皮夹克以保护自己免受寒冷的风吹。
A2 verb /hiːt/

heat

加热
Meaning
to make or become hot or warm
Example
Please heat the soup before serving.
请在上菜前加热汤。
A2 verb /ˈmænɪdʒ/

manage

管理
Meaning
to control or organize something; to succeed in doing something difficult
Example
He manages a team of twenty employees effectively.
他有效地管理着二十名员工。
A2 adjective /ˈkjʊriəs/

curious

好奇
Meaning
Eager to know or learn something.
Example
The curious explorers asked questions about Antarctica.
好奇的探险者询问了关于南极的问题。
A2 noun /ˈnɛtˌwɜrk/

network

网络
Meaning
A system of interconnected people, things, or computers.
Example
She built a strong professional network.
她建立了一个强大的职业网络。
A2 verb /pruːv/

prove

证明
Meaning
to show that something is true; to demonstrate
Example
The evidence will prove his innocence.
证据将证明他的无辜。
A2 adverb /ˈrɑː.ðər/

Rather

宁愿; 而不是;
Meaning
to some extent; instead; preferably
Example
I would rather stay home than go to the party.
我宁愿待在家里，也不想去派对。
A2 adjective /skaɪ bluː/

Sky-blue

天蓝色
Meaning
a bright blue color like that of a clear sky
Example
Her sky-blue eyes sparkled in the sunlight.
她的天蓝色眼睛在阳光下闪闪发光。
A2 noun /stres/

stress

压力
Meaning
Physical, mental, or emotional strain or tension.
Example
Excessive stress can lead to health issues.
过度的压力可能导致健康问题。
A2 verb /hæŋ/

hang

挂
Meaning
to suspend or be suspended from above; to attach from a higher point
Example
I hang my coat on the hook.
我把外套挂在钩子上。
A2 noun /lɪp/

Lip

嘴唇
Meaning
either of the two soft parts that form the edge of the mouth
Example
She applied lipstick to her lips before the party.
她在派对前涂上了口红。
A2 verb /plænt/

plant

种植
Meaning
to put seeds or plants in the ground; to place something firmly
Example
She planted roses in her garden.
她在她的花园里种植了玫瑰。
A2 noun /ˈpɪloʊ/

Pillow

枕头
Meaning
a soft cushion used to support the head while sleeping
Example
She rested her head on the soft pillow.
她把头放在柔软的枕头上。
A2 noun /faɪl/

File

锉刀
Meaning
a tool with a rough surface for smoothing or shaping hard materials; a collection of papers or data
Example
He used a metal file to smooth the rough edges.
他使用了一把金属锉刀来平滑粗糙的边缘。
A2 noun /ˌʌpˈsteəz/

Upstairs

楼上
Meaning
on or to an upper floor of a building; the upper floor or floors
Example
She went upstairs to her bedroom to rest.
她上楼去她的卧室休息。
A2 adjective /pjʊər/

Pure

纯净的; 清澈的; 无污点的; 无歧视的;
Meaning
clean; clear; untainted; without discrimination;
Example
The water from the mountain spring is pure.
来自山泉的水是纯净的。
A2 noun /wɔːr/

War

战争
Meaning
a state of armed conflict between different countries or different groups within a country
Example
The war lasted for five years and caused great destruction.
战争持续了五年，并造成了巨大的破坏。
A2 noun /seɪl/

sale

促销
Meaning
the exchange of a commodity for money; the action of selling something
Example
The store is having a sale on winter clothing.
商店正在进行冬季衣物的促销。
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 ˈhɪrəʊ

hero

英雄
Meaning
A person who is admired or idealized for courage, outstanding achievements, or noble qualities.
Example
Sydney Carton becomes the ultimate hero through his sacrifice.
悉尼·卡顿通过他的牺牲成为了终极英雄。
A2 noun /mjuːˈzɪʃən/

musician

音乐家
Meaning
a person who plays a musical instrument or is musically talented
Example
He is a talented musician.
他是一个才华横溢的音乐家。
A2 adjective /ˈdeɪndʒərəs/

dangerous

危险
Meaning
likely to cause harm or injury; unsafe
Example
Driving fast on icy roads is dangerous.
在冰雪路面上开车很危险。
A2 verb /kənˈtɪn.juːd/

continued

继续
Meaning
Kept happening or carried on without stopping.
Example
She continued working despite the challenges.
她继续工作，尽管面临挑战。
A2 noun /dəˈrɛkʃən/ or /daɪˈrɛkʃən/

direction

方向, 指令
Meaning
the course or path on which someone or something is moving; instructions on what to do
Example
He asked for directions to the train station.
他询问了去火车站的方向。
A2 noun ˌedʒ.ʊˈkeɪ.ʃən

education

教育
Meaning
The process of receiving or giving systematic instruction, especially at a school or university.
Example
Quality education is key to progress.
优质教育是进步的关键。
A2 noun /stoʊn/

stone

石头
Meaning
a hard, naturally occurring mineral material found in the earth
Example
He threw a stone into the lake.
他把一块石头扔进湖里。
A2 adjective /ˈsɪr.i.əs/

Serious

严肃的; 认真的; 重要的;
Meaning
thoughtful; grave; requiring careful consideration; not joking
Example
This is a serious matter that needs immediate attention.
这是一个需要立即注意的严肃问题。