pick
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英语 BN 孟加拉语 HI 印地语 ES 西班牙语 FR 法语 DE 德语 RU 俄语 ZH 中文 JA 日语
All Vocabulary Cards All Vocabularies
A2 verb /pɪk/

pick

选择
Meaning
to choose; to take or select from a group; to pluck or gather
Example
Please pick your favorite color from the palette.
请从调色板中选择您最喜欢的颜色。
A2 noun, verb /fɔːrm/

form

形状 / 表格
Meaning
the shape or structure of something; to bring something into existence
Example
Students filled out the registration form.
学生填写了注册表格。
A2 adjective /ˈpɑːt taɪm/

part-time

兼职
Meaning
working for only part of the usual working day or week
Example
She works part-time as a waitress.
她做兼职工作，担任服务员。
A2 adjective ˈnesəseri

necessary

必要
Meaning
Required to be done, achieved, or present; essential.
Example
Strict regulations are necessary for maintaining order.
严格的规定是必要的，以保持秩序。
A2 noun /əˈbɪləti/

Ability

能力; 技能
Meaning
the power or skill to do something; capacity
Example
She has the ability to solve complex problems.
她有解决复杂问题的能力。
A2 noun /ˈmaɪkroʊweɪv/

Microwave

微波炉
Meaning
an electric oven that uses electromagnetic radiation to heat food quickly
Example
She heated the leftover pizza in the microwave for two minutes.
她把剩余的披萨放进微波炉加热了两分钟。
A2 noun /ˈtoʊstər/

Toaster

烤面包机
Meaning
an electric appliance used for toasting bread slices
Example
I put two slices of bread in the toaster for breakfast.
我把两片面包放进烤面包机里做早餐。
A2 noun /ˈdrɑː.mə/

drama

戏剧
Meaning
a play for theater, radio, or television, or an exciting or emotional situation
Example
She loves watching historical drama series.
她喜欢观看历史剧集。
A2 adjective, noun /dɛd/

dead

死的
Meaning
No longer alive; the end of life.
Example
The old tree is completely dead.
那棵老树已经完全死了。
A2 noun /ˈdɒlfɪn/

Dolphin

海豚
Meaning
A highly intelligent marine mammal with a streamlined body and dorsal fin
Example
Dolphins are known for their playful behavior and intelligence.
海豚以其顽皮的行为和聪明而闻名。
A2 noun /ˈfæʃ.ən/

fashion

时尚
Meaning
a popular or accepted style of clothing, behavior, or way of doing something
Example
She always keeps up with the latest fashion.
她总是跟上最新的时尚。
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！
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。
A2 preposition /əˈmʌŋ/

among

在...之中
Meaning
surrounded by; in the middle of a group
Example
He was sitting among his friends.
他坐在他的朋友们中间。
A2 noun /ˈdrʌɡˌstɔːr/

drugstore

药店
Meaning
A retail store that sells medicines, health-related products, and sometimes cosmetics or snacks.
Example
I stopped by the drugstore to buy some cold medicine.
我去药店买感冒药。
A2 verb; adjective /broʊk/

broke

打破了；没钱
Meaning
past tense of break; having no money or being financially poor
Example
I broke my phone last night and now I’m completely broke.
我昨晚把手机弄坏了，现在一点钱也没有。
A2 noun /hɑːrt/

Heart

心脏
Meaning
the organ in the chest that pumps blood through the body; the center of emotions and feelings
Example
The doctor listened to my heart with a stethoscope.
医生用听诊器听我的心脏。
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 /ˈdʌzən/

dozen

打算
Meaning
a group of twelve
Example
She bought a dozen eggs from the market.
她从市场上买了十二个鸡蛋。
A2 noun /paɪ/

Pie

派
Meaning
a baked dish of fruit, meat, or vegetables, typically with a top and base of pastry
Example
My grandmother makes the best apple pie in town.
我的祖母做了城里最好的苹果派。
A2 noun /dɪˈzaɪnər/

designer

设计师
Meaning
a person who plans and creates the form or structure of something
Example
The fashion designer presented her new collection.
时尚设计师展示了她的新系列。
A2 verb, noun /drɒp/

drop

掉 / 水滴
Meaning
to let something fall; a small quantity of liquid
Example
Be careful not to drop your phone.
小心不要把手机掉了。
A2 noun/verb /ˈsiːzən/

season

季节 / 调味
Meaning
One of the four periods of the year characterized by specific weather conditions; also, to add flavor to food.
Example
Spring is my favorite season of the year.
春天是我最喜欢的季节。
A2 noun /ɡest/

Guest

客人
Meaning
a person who is invited to visit someone's home or attend a particular social occasion
Example
We invited several guests to our wedding celebration last weekend.
我们邀请了几位客人参加上周末的婚礼庆祝活动。
A2 adjective /ˈpɜːrsənl/

personal

个人的
Meaning
relating to a particular person rather than anyone else
Example
She shared some personal details about her family.
她分享了一些关于她家庭的个人细节。
A2 noun /ˈdaʊnˌtaʊn/

downtown

市中心
Meaning
the central part of a city
Example
They spent the afternoon shopping downtown.
他们在市中心购物度过了下午。
A2 verb /feɪl/

fail

失败
Meaning
to not succeed in achieving something; to be unsuccessful
Example
He failed to complete the assignment on time.
他未能按时完成任务。
A2 noun /træʃ/

Trash

垃圾; 废物; 低质量或低价值的东西
Meaning
waste material; refuse; something of poor quality or little value
Example
Please take out the trash before you leave.
请在离开之前拿出垃圾。
A2 noun /ˈmeməri/

Memory

记忆
Meaning
The faculty by which the mind stores and remembers information
Example
She has an excellent memory for faces and names.
她对面孔和名字有出色的记忆力。
A2 noun /ˈæroʊ/

arrow

箭
Meaning
a thin, straight weapon with a pointed tip, shot from a bow
Example
The hunter shot an arrow at the target.
猎人向目标射出了一支箭。
A2 adverb /ˈklɪrli/

clearly

清楚地
Meaning
In a way that is easy to perceive, understand, or see.
Example
She spoke clearly so that everyone could understand.
她清楚地说话，以便每个人都能理解。
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 /ˌrɛkəˈmɛnd/

recommend

推荐
Meaning
to suggest or advise something as being good or suitable
Example
I recommend trying the new restaurant downtown.
我推荐尝试市中心的新餐馆。
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 verb /ʌpˈdeɪt/

update

更新
Meaning
to make something more modern or current; to provide new information
Example
Please update your software regularly.
请定期更新您的软件。
A2 noun /ˈpɑːtnər/

partner

合作伙伴
Meaning
a person who shares or is associated with another in some action or endeavor
Example
She is my business partner in the new venture.
她是我在这个新项目中的商业合作伙伴。
A2 noun ədˈvɛnʧər

Adventure

冒险
Meaning
An unusual and exciting experience or activity that is typically bold and sometimes risky.
Example
Adventure travel is loved by thrill-seekers.
冒险旅行是刺激爱好者的最爱。
A2 noun ˈtem.pər.ə.tʃər

temperature

温度
Meaning
The degree or intensity of heat present in a substance or object.
Example
Rising temperatures affect agricultural output.
上升的温度影响农业生产。
A2 adjective /waɪz/

wise

聪明
Meaning
having or showing experience, knowledge, and good judgment
Example
It was wise of him to save money for the future.
他为未来存钱是明智的。
A2 adverb /ˈnɪərbaɪ/

Near-by

附近; 在附近
Meaning
close to; not far away; in the neighborhood
Example
There is a grocery store nearby.
附近有一家杂货店。
A2 noun; gerund /ˈbɒksɪŋ/

boxing

拳击
Meaning
the sport of fighting with fists using padded gloves; the act of putting something into a box
Example
He has been training hard for a professional boxing match.
他正在为一场职业拳击比赛刻苦训练。
A2 adjective /diːp/

deep

幸福
Meaning
extending far down from the top or surface; profound or intense
Example
The lake is very deep in the middle.
当她收到奖项时，她无法掩饰自己的幸福。
A2 adjective /ˈreɡ.jə.lər/

Regular

规律的
Meaning
happening at fixed intervals; consistent; normal; frequent
Example
She goes for regular exercise every morning at 6 AM.
她每天早上六点进行规律的锻炼。
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 verb /wɛr/

wear

穿戴
Meaning
to have clothing or accessories on one's body
Example
She likes to wear bright colors.
她喜欢穿亮色的衣服。
A2 adjective /ˈfɪnɪʃt/

finished

完成, 结束
Meaning
completed or brought to an end
Example
The painting is finished and ready to display.
这幅画已经完成，准备展示。
A2 noun /ˈdɑrk.nəs/

Darkness

黑暗; 无知;
Meaning
the partial or total absence of light; wickedness or evil; ignorance or lack of knowledge
Example
The power outage plunged the entire city into darkness.
停电使整个城市陷入了黑暗。
A2 noun /æd/

ad

广告
Meaning
a notice or announcement in a public medium promoting a product, service, or event
Example
The company released a new ad for their smartphone.
公司发布了他们智能手机的新广告。
A2 preposition /dɪˈspaɪt/

despite

尽管
Meaning
Without being affected by; in spite of.
Example
He continued his work despite the difficulties.
尽管有困难，他继续工作。
A2 verb /kənˈfjuːz/

confuse

混淆
Meaning
To make someone unable to think clearly; to bewilder.
Example
The complex instructions confused the students.
复杂的指示使学生感到困惑。
A2 noun/verb /əˈmaʊnt/

amount

金额
Meaning
a quantity of something, typically the total of a thing or things in number, size, value, or extent
Example
The total amount of money is not enough.
总金额不够。
A2 verb /ɪkˈspleɪn/

explain

解释
Meaning
to make something clear or easy to understand by describing it in more detail
Example
The teacher explained the difficult concept to the students.
老师向学生们解释了这个困难的概念。
A2 adverb /æz ˈjuː.ʒu.əl/

As usual

像往常一样
Meaning
in the way that is normal or typical; customarily
Example
As usual, he arrived late to the meeting.
像往常一样，他迟到了会议。
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。
A2 verb /sɜːrtʃ/

search

搜索
Meaning
to look carefully for someone or something; to examine thoroughly
Example
The police searched the house for evidence.
警察搜查了房子以寻找证据。
A2 verb /kəmˈpleɪn/

complain

抱怨
Meaning
to express dissatisfaction or annoyance about something
Example
He often complains about the noise in the neighborhood.
他经常抱怨邻里的噪音。
A2 adjective /ˈfɔːrən/ or /ˈfɑːrən/

foreign

外国的
Meaning
Belonging to or coming from another country.
Example
She loves studying foreign languages.
她喜欢学习外国语言。
A2 noun /flaɪt/

flight

航班 / 航班
Meaning
the act of flying, typically through the air; or a scheduled trip by an aircraft
Example
Our flight to London was delayed due to bad weather.
我们飞往伦敦的航班因恶劣天气而延误。
A2 adjective /breɪv/

brave

勇敢
Meaning
showing courage in the face of danger or difficulty
Example
The brave firefighter rushed into the burning building.
勇敢的消防员冲进了燃烧的建筑物。
A2 noun /klʌb/

club

俱乐部
Meaning
an organization of people with a common interest; also a place for social gatherings or entertainment
Example
He joined the local tennis club to meet new people.
他加入了当地的网球俱乐部，以结识新朋友。
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 noun /ˈdɪfərəns/

difference

区别
Meaning
A point or way in which things are not the same.
Example
There is a big difference between theory and practice.
理论和实践之间有很大的区别。
A2 adjective ˈhjuː.mən

human

人类的
Meaning
Relating to or characteristic of people or human beings; showing the better qualities of humankind, such as kindness.
Example
Human values shape social systems.
人类的价值观塑造了社会体系。
A2 preposition /tɔːrdz/

towards

朝
Meaning
in the direction of
Example
He is running towards the park.
他正在朝公园跑。
A2 noun /ˌkɒnvəˈseɪʃn/

conversation

对话
Meaning
an informal talk between two or more people, in which ideas, feelings, and thoughts are exchanged
Example
We had a long conversation about future plans.
我们就未来的计划进行了长时间的对话。
A2 noun /ˈbʊkʃɒp/

bookshop

书店
Meaning
a retail store where books are sold
Example
She spent an hour browsing in the small bookshop.
她在那家小书店里逛了一个小时。
A2 verb /daɪ/

die

死
Meaning
to stop living; to cease to exist
Example
The flowers will die without water.
花儿没有水就会死。
A2 verb ˈselɪbreɪt

celebrate

庆祝
Meaning
To acknowledge a significant or happy day or event with a social gathering or enjoyable activity.
Example
Bangladesh celebrates Urban Planning Day on November 8.
中国庆祝国庆节，日期是10月1日。
A2 adjective /sər'praɪzd/

Surprised

惊讶
Meaning
feeling or showing surprise; astonished
Example
I was surprised to see my old friend at the market.
我在市场看到我的老朋友时感到惊讶。
A2 verb /ˈhɜːri/

hurry

赶快
Meaning
to move or act with great speed; to rush
Example
We need to hurry or we'll be late.
我们得赶快，否则我们会迟到。
A2 noun /vjuː/

View

视野; 观点; 意见
Meaning
the ability to see something; a particular way of considering or regarding something; an opinion
Example
The mountain view from our hotel room was breathtaking.
从我们酒店房间看出去的山景令人叹为观止。
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 noun /ˌsɪtʃuˈeɪʃən/

Situation

情况; 事态
Meaning
a set of circumstances in which one finds oneself; a state of affairs
Example
We need to assess the current situation before making any decisions.
我们需要在做出任何决定之前评估当前情况。
A2 noun /ˈrɛkɔːd/

record

记录
Meaning
a written or spoken account of something
Example
I kept a record of all the meetings.
我记录了所有的会议。
A2 adverb /ˈstrɒŋɡli/

strongly

强烈地
Meaning
in a strong manner or to a great extent
Example
She strongly believes in the power of positive thinking.
她坚信积极思考的力量。
A2 noun /rɪˈlɪdʒ.ən/

religion

宗教
Meaning
a system of faith and worship involving belief in a higher power
Example
Freedom of religion is a fundamental human right.
宗教自由是基本人权。
A2 adjective /ˈstuː.pɪd/

Stupid

愚蠢的; 笨的; 傻的
Meaning
lacking intelligence or common sense; foolish
Example
It was stupid of me to forget my umbrella on a rainy day.
在一个下雨的日子里，我忘记带伞真是愚蠢。
A2 noun /dɪˈzæs.tər/

Disaster

灾难
Meaning
a sudden event causing great damage or loss of life; a complete failure
Example
The earthquake was a natural disaster that affected thousands of families.
地震是一次自然灾难，影响了成千上万的家庭。
A2 adjective /ˈɪntrəstɪd/

interested

感兴趣
Meaning
Showing curiosity or concern about something.
Example
She is very interested in learning new languages.
她对学习新语言非常感兴趣。
A2 noun /ˈmoʊtərˌsaɪkəl/

motorcycle

摩托车
Meaning
a two-wheeled motor-powered vehicle designed for transportation
Example
He rides his motorcycle to work every morning.
他每天早上骑摩托车去上班。
A2 verb /oʊˈbeɪ/

obey

服从
Meaning
to follow orders or instructions; to comply with rules
Example
Children should obey their parents and teachers.
孩子们应该服从父母和老师的命令。
A2 conjunction /ɔːlˈðoʊ/

although

尽管
Meaning
in spite of the fact that; even though
Example
Although it was raining, they went for a walk.
尽管下雨，他们还是去散步了。
A2 adverb /ˈpɒs.ə.bli/

Possibly

可能; 或许;
Meaning
perhaps; maybe; it may be the case that
Example
It will possibly rain tomorrow.
明天可能会下雨。
A2 noun /ɡæs/

gas

气体
Meaning
A substance like air that is neither solid nor liquid and can expand freely.
Example
The balloon was filled with gas.
气球充满了气体。
A2 noun /koʊt/

Coat

外套
Meaning
an outer garment worn over other clothes for warmth or protection
Example
He put on his winter coat before going outside.
他在出门前穿上了冬季外套。
A2 noun /ˈhɒki/

hockey

曲棍球
Meaning
a sport played with sticks and a ball or puck on ice or a field
Example
He plays hockey for the national team.
他为国家队打曲棍球。
A2 noun /biː/

Bee

蜜蜂
Meaning
a flying insect that produces honey and can sting
Example
The bee collected nectar from the flower.
蜜蜂从花朵中采集了花蜜。
A2 adjective /ˈɪn.dɔːr/

indoor

室内的
Meaning
situated, occurring, or used inside a building
Example
Indoor plants can improve air quality at home.
室内植物可以改善家里的空气质量。
A2 noun /ˈɡraʊnd flɔːr/

ground floor

一楼
Meaning
the floor of a building at ground level; the starting level of an organization or activity
Example
The grocery shop is located on the ground floor of the building.
杂货店在一楼。
A2 noun /teɪl/

Tail

尾巴
Meaning
the rear part of an animal that extends from the back or bottom
Example
The dog wagged its tail happily when it saw its owner.
狗看到主人时高兴地摇了摇尾巴。
A2 noun/verb /ˈtræn.spɔːrt/

transport

运输
Meaning
The movement of people or goods from one place to another.
Example
Efficient transport systems reduce travel time.
高效的运输系统减少了旅行时间。
A2 verb /ˈwʌri/

worry

担心
Meaning
to feel anxious or troubled about something; to be concerned
Example
Don't worry about the exam results.
不要担心考试结果。
A2 adjective /ˈsaɪ.lənt/

Silent

安静的; 沉默的; 平静的
Meaning
making no sound; quiet; not speaking
Example
The library was completely silent during study hours.
在学习时间，图书馆是完全安静的。
A2 noun əˈɡriː.mənt

agreement

协议
Meaning
A negotiated arrangement between parties as to a course of action.
Example
The agreement was accepted by all countries.
该协议已被所有国家接受。
A2 verb /beɪs/

base

基于
Meaning
to use something as a foundation; to establish or locate something
Example
They based their decision on facts.
他们基于事实做出了决定。
A2 adverb /ˈsʌd.ən.li/

Suddenly

突然
Meaning
quickly and without warning; unexpectedly
Example
The car suddenly stopped in the middle of the road.
车子突然停在了路中间。
A2 noun /tʃæns/

chance

机会
Meaning
An opportunity or possibility of something happening.
Example
He took a chance and applied for the job.
他冒险申请了这份工作。
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。
A2 verb /der/

dare

敢
Meaning
to have courage to do something; to challenge someone
Example
I dare you to jump into the pool.
我敢挑战你跳入泳池。
A2 adjective /ˈkwaɪ.ɪt/

Quiet

安静的; 平静的; 没有声音的; 发出很少或没有噪音
Meaning
silent; peaceful; calm; making little or no noise
Example
Please keep quiet during the movie.
请在电影期间保持安静。
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 /ˈtɛstɪŋ/

testing

测试
Meaning
the process of assessing or evaluating something, often by trying it out
Example
The testing of the new software is still ongoing.
新软件的测试仍在进行。
A2 noun /kɔːrs/

course

课程，路径或一组教育课程
Meaning
a direction, path, or a set of educational lessons
Example
She enrolled in a computer science course.
她报名参加了计算机科学课程。
A2 verb /rɪˈmeɪn/

remain

留下
Meaning
to stay in the same place; to continue to exist
Example
Only a few guests remain at the party.
只有少数客人留在派对上。
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 noun /toʊ/

Toe

脚趾
Meaning
any of the five digits at the end of the human foot
Example
She stubbed her toe on the chair leg.
她把脚趾碰到了椅子腿。
A2 noun /ədˈvæn.tɪdʒ/

Advantage

优势; 利益
Meaning
a condition or circumstance that puts one in a favorable position; a benefit
Example
Having a college degree gives you an advantage in the job market.
拥有大学学位可以在就业市场上为您提供优势。
A2 adjective /draɪ/

Dry

干燥的; 无湿气或液体; 无聊
Meaning
free from moisture or liquid; not wet; lacking interest or excitement
Example
The desert has very dry climate.
沙漠的气候非常干燥。
A2 noun /ˈkɒmədi/

comedy

喜剧
Meaning
A type of entertainment that is intended to make people laugh.
Example
We watched a hilarious comedy at the theater.
我们在剧院看了一场有趣的喜剧。
A2 noun /ˈɒpərə/

opera

歌剧
Meaning
a dramatic performance in which the actors sing most of their lines
Example
We watched a beautiful opera at the theater last night.
我们昨晚在剧院观看了一场美丽的歌剧。
A2 verb /ʌpˈset/

upset

烦扰
Meaning
to make someone worried, sad, or angry; to disturb
Example
The bad news upset everyone.
坏消息 upset 每个人。
A2 adjective, noun /ˈeɪʒən/

asian

亚洲的
Meaning
relating to Asia or its people
Example
She loves Asian culture.
她喜欢亚洲文化。
A2 pronoun /ɪtˈsɛlf/

itself

自己
Meaning
Used to emphasize the thing just mentioned; by its own power or effort.
Example
The cat cleaned itself after eating.
猫在吃完饭后自己清理了自己。
A2 verb /rɪˈdjuːs/

reduce

减少
Meaning
to make smaller in size, amount, or degree; to decrease
Example
We need to reduce our expenses this month.
我们需要减少本月的开支。
A2 noun /taɪər/

tire

轮胎
Meaning
a rubber covering around a wheel
Example
The car’s tire burst on the highway.
汽车的轮胎在高速公路上爆裂了。
A2 adverb /ˈsɜː.tən.li/

Certainly

肯定
Meaning
without doubt; definitely; used to agree or give permission
Example
I will certainly help you with this project.
我一定会帮助你完成这个项目。
A2 adverb /əˈbrɔːd/

Abroad

在国外
Meaning
in or to a foreign country
Example
She decided to study abroad for a year.
她决定去国外学习一年。
A2 noun, verb /ˈmætər/

matter

问题 / 重要
Meaning
A subject or situation under consideration; to be important.
Example
It doesn’t matter what others think.
不在乎别人怎么想。
A2 preposition /ˈɒntu/

onto

在…上
Meaning
moving to a position on the surface of something
Example
She jumped onto the table to get the book.
她跳到桌子上去拿书。
A2 noun /ˈfiːvər/

fever

发烧
Meaning
a medical condition in which the body temperature is higher than normal
Example
He couldn’t go to work because he had a high fever.
他因高烧而不能上班。
A2 noun /ˈplænɪt/

Planet

行星
Meaning
a celestial body moving in an elliptical orbit around a star
Example
Mars is the fourth planet from the sun.
火星是离太阳第四颗行星。