英语 作文 自我介绍【热门20篇】

My name is Yin Zhaoyi. Im nine years old. Im from Hengyang, Hunan. I love writing and reading.

I was a lively and cheerful girl, face, round eyes, long eyebrows, high nose, black hair, big mouth, short stature, long limbs.

Today is Sunday. I asked my mother if I could go to the library to read books. My mother said yes, I went straight to the library happily, and there were very few people in the library. I picked up a book and looked up. An hour passed, and two hours passed. Until 6 oclock in the evening, I found it was 6, and I ran home at full speed.

I have a white dog.Its name is Bobo.She is a female dog.She comes from Beijing,China.She has two big eyes and a small month.She wears white clothes.

She often walks around at home.It has nothing to do.She likes eating ice-cream so much,So do I.When I eat ice-cream,she will look at the ice-cream carefully.So I will give her some to eat.

My father is a very respectable man in the world.Although he is not tall and strong as any of the heroes described in the novels,not handsome as any of those stars of stage and screen, he is the greatest man in my eyes.As a worker in a steel factory, he worked hard for me and my mother in his whole life, none penny was spent for himself.

He would never buy drinks on street under the torrid noonday sun for saving money to buy me an ice-cream.

cheerful，open-minded,warm-hearted...all nice words I can put on my dear father.

you would have fun with him all day long during the talk with him.

He is a very easy-going man so thats why he has so many friends.To help anyone who ever or never helped us means a lot to him.

I love my dad as I love myself, i pray to God that He could let me be his daughter in my next life if there is...

Hi， everybody！My name is …. I study in  changan  central  primary  school  大家好，我叫… 我在长安中心小学学习

I  am in Class 4 Grade 1  I like English very much. 我在一年级4班，我很喜欢英语

I study English everyday ,  I read books ,I listen to the tapes and watch videos我每天都学习英语。我读英语书, 听英语磁带，看英语光碟

My name is Ruby Lin, and an actor of the same name, my parents want me to become an educated girl. I am 12 years old. I am from the 4 class in 6 years in XX road school. I have many hobbies: badminton, painting, playing chess and so on. Among them, I like playing the piano most, because playing the piano can make me forget all worries and intoxicated. Besides, I won many gold medals in the piano competition. I have passed the ten level now.

In school, my academic record is pretty good, and I can get the best in every school. In the eyes of the parents, I am a lively little girl; in the eyes of the teacher, I am a positive student; in the eyes of my classmates, I am a helpful, optimistic and cheerful classmate; and in my own eyes, I am a unique girl, a girl full of personality and ideal. Please remember me, Ruby Lin. Thank you all.

1.Rabbit is an cute kind of amimals.It has two long ears.They can make rabbits hear carefully.It also has a short tail.They make rabbits so lovely.Rabbits likes carrots.If you are lonely.You can keep a rabbit.It can be your friends.

2.The little Rabbit has a coat of white hair.The two ears are long and prick up on its head.It is furry,soft and white with two red eyes glaring above the chin.Its eyes are like a pair of small red hulbs.Exposed to sunlight,they become little pieces of red thread.Its ears are straight and long and they can turn and move slightly.How cute it is!

小白兔全身盖一层雪白的毛.两只耳朵很长,直立在头上.它长着一身柔软的毛,瞪着l双红眼睛.眼睛像1对红色的小灯泡,见到阳光时就微微眯起；耳朵长而直竖,有时还会微微转动,它多可爱啊

I came from * * university of technology, has the good professional knowledge and operating ability, and in * * * month by the national human resources management division (level 3) exam. Solid grasp of human resources management related knowledge, be familiar with human resources development, performance management and appraisal, compensation management and enterprise strategy management process, familiar with the study and master the "labor contract law" and relevant theory of the social security act.

My English level is outstanding, in the second grade passed cet4 test, have a good reading writing and spoken English. During the period of school, has repeatedly take part in the national college students English contest and get good grades.

During the university, I actively participated in various activities, has held various positions in the community. I love the team activities, have a very strong team cooperation consciousness, during the period of school also served as captain of the football team in the area, has a strong organization and coordination ability. Strong dedication and sense of responsibility that I can face any difficulties and challenges.

打开门，哦，房间很漂亮！这是谁的房间？这是我的房间。

床在窗的附近被子和一个洋娃娃在bed.What颜色是我的床这的;我最喜欢的颜色purple.It大局;多么梦幻的颜色梳妆台旁边的bed.There一些书和梳妆台上的一支笔。

我喜欢看电视。电视在床前。我是躺在床上看电视的。我有一架钢琴。钢琴靠近电视机。有时我弹钢琴。电脑靠近窗户。我经常弹钢琴。

这是我的房间，你喜欢我的房间吗？你的房间呢？

想要拥有一间属于自己的房间。墙的颜色是浅蓝色的。房间里有我喜欢的东西。我想在窗户附近放一张白色的大桌子。所以在我读书的时候，我可以看到飞鸟在天空中飞行。在桌子上，我要放些书。我最喜欢的照片也会放在桌子上。房间中间有一张大的软床。我会把可爱的熊放在当我累了的时候，我会和我的熊睡个甜蜜的睡眠。另一边有一张小桌子，上面有我的电脑。我喜欢用它来和我的好朋友们交流。当然，我会把我喜欢的照片放在墙上。在地板上，我的玩具都留在那里。当我有空时，我想和他们一起玩。

我有一个漂亮的房子。我家有很多书。我每天早上都可以在家里看书。当我踢足球后，我可以在家里休息一下。我也可以在家里玩电脑。我家里有玩具，篮球和各种故事书。我非常喜欢我的房子。欢迎来到我家。

My room

Open the door,oh,the room is very beautiful!Whose room is this?It’s my room.

The bed is near the window.a quilt and a doll is on the bed.What color is my bed?It’s my favourite color—purple.It’s very dreamily color.the dresser is next to the bed.There are some books and a pen on the dresser.

I like watching TV.The TV is before the bed.I an lie to watch TV on the bed.I have a piano.The piano is near the TV set.Sometimes,I play the piano.And the computer is near the window.I often play the piano.

This is my room.Do you like my room?What about your room?

want to have a room of my own.The colour of the wall is light blue.There are thing that I like in the room.I want a big white desk near the window.So while Im reading book,I can see the birds flying in the sky.On the desk Iwant to put some books.The photo of my ffaminily will be put on the desk too.In the middle of the room theres a big big soft bed.And I will put the lovely bear on the bed.When Im tired I will have a sweet sleep with my bear.On the other side there is a small desk.On it,theres my computer.I like to use it to conmunicate with my good friends.Certainly,I will put up the pictures that I like on the bule wall.On the floor my toys are staying there.When Im free I would like to play with them.

I have a nice house.There are many books in my house. I can read in my house every morning.I can have a rest in my house when I am tired after playing football.I can also play computer in my house.There are toys,basketball and all kinds of story books in my house. I like my house very much.welcome to my house.

I am Ma Yuanhao. Now let me tell you something about my family. My family has seven people in it, my father, my mother, my brother, my sister, my uncle, my grandfather and I. My grandfather is a driver. He drives a bus. He works in Beijing. He has two kids. They are my father and my uncle.

My father and my uncle are both office workers. They are in the same office. My brother is a policeman. He is tall and strong. He works in Shenyang.I am a student. My sister is a student,too. We are in the same school, but in different grades. My mother is a nurse. She works in a hospital. We live in Beijing now with my parents.

I often have bread and milk for breakfast. I like eating hamburgers, too. And for lunch, I usually have some chicken with vegetables and rice. Jiaozi is my favorite food. I usually have Jiaozi and an apple for dinner. I think I can eat healthily.

My mother cooks very well. She often cooks nice food for us.

I love my family!

My name is Liu Jiahan. The best part of the Mid Autumn Festival is that of my father and mother. I hope that I will become a broad-minded and knowledgeable person. I am from grade three of the primary school of XX middle school in Dalian. Dont see my height is only 1 meters 30. My hobbies are especially wide. I like to sing and dance to play the piano. My dance performance has also won gold and medals. In addition, I am a sports enthusiast and have participated in many sports games held in schools.

Dont look at so many interests and hobbies, I am more unambiguous in learning, and never score 90 points in all subjects. I came to the youth leader eloquence school, just want to exercise my courage and improve my comprehensive competitiveness. Through this stage of intensive training, make yourself a good kid who is bold enough to express and express. I know that as long as I stick to it, I can do it. Please remember me, a lovely little girl -- my name is Liu Jiahan, and everyone is making friends with me.

Sichuan is located in the Upper Yangtze Valley in the southwestern part of the country. The second largest of the Chinese provinces, it covers an area of 220,100 square miles (570,000 square kilometres). Szechwan is bordered by the provinces of Kansu and Shensi to the north, Hupeh and Hunan to the east, and Kweichow and Yunnan to the south and by the Tibet Autonomous Region to the west and the province of Tsinghai to the northwest. It is the most populous province in China. The name Szechwan means “Four Streams” and refers to the four main tributaries of the Yangtze River, which flows through the province. The capital, Cheng-tu, is located in the centre of the province.

From economic, political, geographical, and historical points of view, the heart and nerve centre of Szechwan is in the eastern basin area, commonly known as the Sichuan, or Red, Basin. Its mild and humid climate, fertile soil, and abundant mineral and forestry resources make it one of the most prosperous and economically self-sufficient regions of China. The area has been seen by some as China in a microcosm and is often viewed as a country within a country. The Chinese call the basin Tien Fu Chih Kuo, which literally means “Heaven on Earth”.

Xiamen is Chinas first four special economic zones,it is Taiwanese,southern Jiangxi,southern Hunan to the east to the sea,the Pacific Rim will be developed into an international harbor.

"City at sea,the sea in the city," Xiamen is a graceful charm of the "Sea Garden." Island,reef,rock,temple,flowers,wood backed each other,the hometown of overseas Chinese customs,practices Fujian and Taiwan,coastal cuisine,exotic blend of construction,year-round spring weather is more of the charm of the sea icing on the cake.Beautiful scenery and pleasant weather,it can be said here is the best environment for cities.Surrounded by sea water,broad sandy beaches,warm sunshine,as a good ecological environment,Xiamens clean air,a habitat for hundreds of thousands of egrets,Xiamen has formed a unique natural landscape,since ancient times,Xiamen Egret is one of the major habitats,so Xiamen Also known as "Lu Dao"; in addition to the beautiful natural scenery,Xiamens urban environment is also very clean,is well-known tourist city.

厦门是中国第一个四个经济特区,它是台湾,江西南部,湖南南部,东至大海,环太平洋地区将发展成为一个国际港口。

“城在海上,海在城中,“厦门是一个“海上花园的优雅魅力。“岛、礁、岩、寺、花、木相互支持,海外中国海关的家乡,实践福建和台湾沿海美食,充满异国情调的建筑融合,全年春天天气是大海的魅力锦上添花。美丽的风景和宜人的天气,这里可以说是最好的城市环境。被海水包围,宽阔的沙滩,温暖的阳光,良好的生态环境,厦门的空气清洁,成百上千的白鹭的栖息地,厦门已形成一种独特的自然景观,自古以来,厦门白鹭的主要栖息地之一,所以厦门也称为“陆道”;除了美丽的自然风光,厦门的城市环境也非常干净,是著名的旅游城市。

Taiyuan is a historic city, Gu Cheng Jinyang, was founded in about 497 BC, for the early capital of the Zhao. In 246 BC, Qin Shi Huang at the world for 36 counties, Taiyuan County home early, from the start of Taiyuan said. After the Northern Dynasties, Sui and Tang period, the city of Taiyuan has been for ages. In the Five Dynasties, has for the Hou Jin Yang, Han, the Norths capital of Seoul. In 960 AD, Zhao Kuangyin to overthrow the Later Zhou Dynasty, the establishment of the Northern Song Dynasty, sent his brother Zhao Guangyi in the year 979 years to capture Jinyang, set fire to the city, the city reduced to ashes generation. In 982 AD, Zhao Guangyi and Pamela reconstruction will be assigned to the Department of Taiyuan City. It was not until early in this warlord Yan Xishan rule of Shanxi, Taiyuan, in order to the capital, and down more than two thousand years, the ancient city of Taiyuan, after the war, repeatedly replacement. April 24, 1949, the Chinese Peoples Liberation Army to capture Taiyuan before the end, the ancient city back to the hands of the people, then on to obtain a new lease on life. In the long history, Taiyuan, has developed its famous handicraft industry and commerce. As early as the Tang and Song period, Taiyuan, has become a more developed cities in the handicraft industry. Taiyuan Ceramics of the Song Dynasty, grain porcelain patterns unique in the country. After the Yuan Dynasty, Taiyuan, the countrys arms manufacturing center. Tang, Song, Taiyuan, the business has developed rapidly. Especially in the Ming Dynasty, when the Taiyuan major Nanguan workshops, shops spread all over, unprecedented, the ancients had Bi Tian Guang, the vein to praise.

[介绍山西的英语作文

I have several friends. Wang Lin is my best friend. He is eleven yearsold. He comes from Beijing.Wang Lin came here three years ago. He came with his parents. His father is an engineer and his mother is a middle school teacher. He has no brothers or sisters. He is the only child of his parents.We are classmates at school, so we see much of each other.He is fond of English and I am good at maths. We always help each other. Both of us have made great progress in our studies.We have made up our minds to study harder and win success in our studies.

[我的朋友英语作文5篇

Respected business leaders:

Hello!

Thank you for your first start reading, giving me the opportunity to you goes to my cover letter.

I Jiangxi Vocational College of Economics an d Management Department of Logistics Management 2010 graduates with the same number of our students, graduate an d harvest in sight, waiting for the test of the community an d look forward to your choice.

I was born in rural areas, studying in the city, so honest an d generous Chinese farmers an d urban people”s traditional virtues of a strong confident personality in me to get the perfect combination, which I have good social adaptation. University for three years to hone more I experience the significant increase in overall capacity strengthening, personal qualities to be a qualitative leap.

Bao Jianfeng from sharpening out, plum blossom from the bitter cold, looking back, slowly an d study hard more than a dozen set, I split the air waves in the vast Xuehai cut, to seek the knowledge of the mountain. To pursue their studies of the exquisite, the pursuit of ambitions to achieve, manifestation of the pursuit of personal values, learning career, I have sought all-round development in physical an d moral. I sweat pour out of fruitful results. college three years, I have every year are very outstan ding professional achievements, an d received third-class scholarship. Not only that, but also repeatedly been assessed "outstan ding cadres” college, many times the individual literary works in the College of Competition award.

Knowledge while at the same time I did not forget to shape their own character, honesty, unity an d good to my usual style, aggressive, hard work is my unique personality. To accompany raising their overall quality, I have actively participated in school a variety of meaningful activities outside; addition to specialized courses, I was the other after-school elective courses, including literature, psychology, acCounting, management, etc., in order to broaden their knowledge. usually either studying or living, I have to deman ding their own, I will put this character to the work which, strive to improve their ability to work, make their businesses grow gradually with the growth.

"Decade of sword, frost edge never try ”, I sincerely hope to become a member of your organization, I will, with enthusiasm an d tenacity of character to work hard an d cooperate with colleagues, contribute to savings for many years as a unit wisdom an d skill. urge acceptance letter, is hope, I await your good news! I believe my ability, but I believe you are the right choice! give me a chance, I will have you a miracle!

Sincerely,

Salute!

Yangzhou (Yángzhōu [扬州]), known as a city of gardens and alleys, is a destination that makes a trip to China unforgettable. Little known to most foreign travelers, Yangzhou is a proud retainer of ancient Chinese architecture, art, culture, traditional gardens and parks, cuisine, leisure, and commerce in a beautiful mixture of modernity with its rich 2,500 year history. The demolition sledgehammer has not made much headway here, leaving an increasingly harder to find view into the past. All in all, Yangzhou is the ideal place to experience unique aspects of Chinese culture, and is a relaxing break from other overly developed and commercialized urban centers in the region.

My name is Liu * * *. Because of the name, I used to call myself "the queen of stars" on the internet". Do not think that I am too arrogant, because the stars themselves are ordinary and shining, so I like them. Of course, I wish I could be one of many stars. If one day you meet a girl called star dance on the Internet, it must be me -- 11 years old, monkey, virgo......

Of course, I have with the stars very ordinary appearance: big eyes, but very bright; neither tall nor short nose; not too big or too small mouth; white skin, a not too long or too short tail pigtail, high up in the back of my head, flash flash, very naughty...... (but my mother cut my hair short now)

I have a wide range of hobbies, such as music, microcomputer, Mathematical Olympiad, english...... Well, theres one more thing you cant think of! Let me tell you, its cosmic exploration - Stonehenge, crop circles, aliens, for example...... In a word, I like everything that is unknown.

I particularly like music, since I was 6 years old, I began play the piano, less than nine years old, I was out of the piano six. When I played Mendelsohns "Venice Barcarolle", I feel like being in a ripple on the surface of the boat, the silence, the moonlight shines down, like scattered on the surface of mercury, flash, beautiful......

I also played the love guitar. I took two lessons and I started to play chords. I have learned many beautiful songs such as "years ago", "walking", "Red River Valley", "childhood" and so on......

You ask me why I love music so much, but I dont know. But when I was in the music melody, I felt great enjoyment.

I also like the Olympic math because it can develop my intelligence and keep my head spinning. A difficult problem is like a castle, although it is difficult to overcome, but as long as I use my head, you can feel the joy of success.

Of course, the United States must have shortcomings, my shortcomings is very sloppy, looking for something at home every day, today wearing a watch, tomorrow will not find it, what things are everywhere. Oh! My family cant help me. Dont look at me. Im careless in life. But I dont do it carelessly. I can check every question carefully. However, when occasionally careless, like what I do, because not carefully, the paper clearly requires simplification, but I made for the ratio! Miserable, dizzy, faint! Because of this, the teacher gave me 4 points. After several lessons, I must correct this bad habit in the future. The ox is not blowing! Trust me!

What exactly does it look like to me? In the future there will be three years to verify. I really really want to be the North Star - the brightest star in the sky, of course, and it takes a lot of effort. I hope that in the next three years, I can get along well with my teachers and classmates and break through the difficulties with my teachers and classmates!

I have a lot of friends but Amy is my best friend.He is a boy. Both of us are good at English, so we often have a chat in English in our spare time. After school, we often play football together on the playground. He runs so fast that I can not catch up with him. He is an excellent student. He not only gets good marks in all subjects but also is very kind and modest. He loves popular songs and also classical music.

Chinese New Year! Every place has different customs, and each has its own characteristics. I had the opportunity to back to my home in chongqing this year New Years day, let me introduce you to the Spring Festival customs of tujia.

New Years eve at noon, I saw my grandma cooked a lot of rice, just curious to ask: why want to cook so much rice, we also cant eat a meal? Grandmother replied: "want to cook some more, todays day cant cook fresh rice again. For tujia people seldom eat fish, so be about to cook more, it is also called more every year."

New Years eve afternoon, grandpa and father stick couplets, I also coincided with in the past. East, west to see see. When my father asked me: "do you know why do we need to stick couplets?" I answered: "know a little bit, festive bai." "Also right, couplet to express the good wish of people to pray for good fortune in the New Year. Now we stick couplets, cannot go toward outside throwing things, even cant throw rubbish, until annual lunar calendar to throw things. This means that circle the goods at home." Dad went on to say that.

On the evening of New Years eve, the home of the elder led the family to "worship the mountain ancestor worship". On the front of ancestors grave red candle and incense, placed offerings, to miss to ancestors. This also is respect for them.

These are the Spring Festival customs of tujia, I know you think its interesting.

过年啦!每个地方都有不同的习俗，并且都各具特色。今年我有幸回趟老家重庆过年，就让我给大家介绍一下土家族的春节习俗吧。

除夕的中午，我见奶奶煮了好多饭，就好奇的上前去询问：为什么要煮这么多饭，我们一顿也吃不了呀?奶奶回答道：“今天要多煮一些，大年初一可不能再煮新鲜饭。因为土家族人很少吃鱼，所以就要多煮饭，这也叫‘年年有余’吧。”

除夕的下午，爷爷和爸爸一起贴对联，我也过去凑热闹。东看看，西瞧瞧。这时爸爸问我：“你知道我们为什么要贴对联吗?”我回答：“知道一点点，喜庆呗。”“也对吧，对联是为了表达人们祈求新年福运的美好心愿。现在我们贴好了对联，就不能往外扔东西了，连垃圾也不能扔，一直要到大年初二才可以扔东西。这样就表示把财圈在家里了。”爸爸接着说。

除夕的傍晚，由家里的最长者带领全家去“拜山祭祖”。在先辈的坟前点上红烛和香，摆上祭品，以表对先辈的怀念。这也是对他们的尊敬。

这些就是我了解的土家人的春节习俗，你觉得有趣吧。

When the small eyes on a pair of thick eyebrows, and a small by the mouth, dont look at my head is small, actually very clever.

On one occasion, the teacher a comprehensive assignment, for us to interview love smoking father. I got home, immediately call mom take video recorder, help me to take the interview process. All of a sudden, I thought: this empty-handed interview dad a bit not good. My little head a thought of a way to immediately ran to the front of the a drawer take out a bad microphone poser, said: "Im ready." Mom smiled said: "you really can recycling."

In my mother and I, under the guidance of finding out the relevant information, but dad bad memory, is back not to come out, my mother and I walk around to find a way to. Suddenly I a brainwave, excited, said: "I figure out a way, to print the information down first, and then mother take video recorder at the front, data get behind, so dad appears, video cant see, this is not kill two birds with one stone?" Mom, dad listened to the straight nodded said: "why didnt we think? Thanks to your head and clever, dont dismiss your little head anymore." In this way, our interview smoothly completed, also praised by the teacher the classmates. Im glad to touch the little head, said to himself: "little head count you enough today!" Thinking about, and took a few little head.

Ha ha! This is a clever and smart I, you say?

一双时大时小的眼睛上有一双浓浓的眉毛，还有一张能说会道的小嘴巴，别看我脑袋小，其实机灵得很。

有一次，老师布置了一个综合作业，要我们去采访一下爱吸烟的爸爸。我一回到家，马上叫妈妈拿好录像机，帮我拍采访的过程。突然，我想：这样空手采访爸爸有点不大好。我的小脑袋一转想到了办法，马上跑到一个抽屉前拿出一个坏的话筒装样子，说：“我已经准备好了。”妈妈笑笑说：“你真会废物利用呀。”

在我和妈妈的指点下，找出了相关资料，但爸爸记性太差，实在是背不出来，我和妈妈走来走去想办法。忽然我灵机一动，兴奋的说：“我想出办法了，先把这段资料打印下来，然后妈妈把录像机拿在前面，资料拿在后面，这样爸爸看得见，可录像机却看不见，这不是一举两得了吗?”妈妈爸爸听了，直点头称赞说：“我们怎么没想到呢?多亏你脑袋机灵，以后再也不小瞧你的小脑袋了。” 就这样，我们的采访很顺利的完成了，还得到了老师同学们的赞扬。我高兴地摸着小脑袋，心里说：“小脑子今天算你够厉害!”想着，又拍了几下小脑袋。

哈哈!这就是一个又机灵又聪明的我，你们说呢?

导语：随着雾霾天气的增加，我们慢慢的开始关注环境保护话题了，下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Haze is air pollution in which is mixed up with dust, smoke and other dry particles ,and it obscure the clarity of the sky and interacts with the natural environment.

This kind of air pollutant come from a variety of natural and manmade sources. Natural sources can include windblown dust, and soot from wildfires. Manmade sources can include motor vehicles, and industrial fuel burning, and manufacturing operations. The one of the main cause that touches off haze is manufacturing operations. Many factories were over measure produced the smog that had over the standard and the smog seriously influence the air become air pollution.

The components that make up haze may have negative effect on peoples health especially that of the children and the elderly. Also not excluded are those who have certain diseases such as asthma, allergy, and pneumonia and lung disease. Workers working in the open air have a high risk in their health.

One of effective solutions to help eliminate haze is to make some chemistry changes during the manufacturing process,so it could reduce harmful emissions which are produced by manufacturing operations.

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霾是空气污染，它与灰尘、烟雾和其他干粒子混合在一起，使天空的清晰度模糊，与自然环境相互作用。

这种空气污染物来自各种自然和人为的来源。自然源包括风吹灰尘，煤烟，野火。人造资源可以包括汽车，工业燃料燃烧和制造业务。造成雾霾的主要原因之一是制造业经营。许多工厂过度测量产生的烟雾超过标准，烟雾严重影响空气成为空气污染。

构成雾霾的成分可能对人们的健康产生负面影响，尤其是儿童和老年人。也不排除那些有某些疾病，如哮喘，过敏，肺炎和肺部疾病。在户外工作的工人在健康方面有很高的风险。

帮助消除雾霾的有效方法之一是在制造过程中进行一些化学变化，从而减少制造过程中产生的有害排放物。