Thoughts on dusty travel. Urgent. . .

(dusty trip)

Dust is a traveler. It is very small. It drifts with the turbulence of the air and travels around the world with the wind.

The air around us is almost everywhere, from indoors to outdoors, from cities to villages, from plains to mountains, from deserts to oceans. A truly dust-free space can only be created in the laboratory.

Dust is the destroyer of breathing, which can block the nostrils, inflame the trachea, injure the lungs, and cause infectious diseases such as colds, influenza and pneumonia. If the dust is mixed with tuberculosis, it is even more dangerous. So spitting must be forbidden. In addition, metal dust, especially lead, can poison people; Lime and cement dust can damage our lungs and corrode our skin; Pollen can cause asthma. In these cases, in order to resist the invasion of dust, we must wear masks or masks. Finally, dust will not cause explosion, which is a serious accident and must be prevented. Therefore, we should pay more attention to washing hands and bathing frequently, and pay attention to environmental hygiene and personal hygiene. Let's have a better body and a better home.

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Edited on 20 14- 10-22.

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30 comments

Wen Yanyan 27

There is a mistake in what you wrote. Watch it yourself when you have time.

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After reading it, the following is more interesting-

Thoughts on dusty travel

After reading Goose Line, I carefully read Goose Line Niels in this book club activity in China. Niels' Goose Riding Tour is a Swedish woman writer Selma? A fairy tale written by La Grove for children is also her masterpiece. This work vividly tells the interesting experience of the little boy Niels riding a goose and depicts the beautiful rivers and mountains of the author's native Sweden. The book also introduces a large number of Swedish folklore, so that young readers can understand sincerity, courage, friendship and patriotism in reading and gain rich knowledge of geography and history. This work was a great success and won the Nobel Prize in Literature for the author. Now it has been translated into more than 50 languages and adapted into cartoons. The hero in the book is Niels, who was restored by the elf. Niels' goose took Niels, magically flew into the sky and traveled with the goose. So Niels began a long and dangerous journey. Along the way, with the help of various animals, he destroyed many tricks of Fox Smith. Niels was almost crushed to death by a bronze statue of the king after he escaped from Bandit Mountain. Fortunately, the puppet helped him. Defeated the gray vole army and saved the little squirrel ... He experienced many things, overcame many difficulties and finally arrived in Lapland. Then Niels and the geese flew back and flew home. Because he took good care of the goose, Niels became bigger and returned to his parents. Niels has also changed from a naughty boy to a brave and helpful boy. I like this book very much. This book not only made me understand a lot of truth, but also showed me the mountains, rivers, forests and grasslands in Sweden and listened to many touching ancient legends. I hope someone can make me smaller, and I will be happy to help more people in need, let us humans and animals help each other and make our world a better place. I also hope that our writers will write down the beautiful mountains and rivers and beautiful legends of the motherland, so that we can appreciate the beautiful mountains and rivers and beautiful scenery of the motherland; Let us feel the profound traditional culture of the motherland in the beautiful myths and legends.

12 likes 856 browsing 20 19-08-0 1

Some thoughts on the journey of dust. Help search!

Dust is a traveler. It is very small. It drifts with the turbulence of the air and travels around the world with the wind. The air around us is almost everywhere, from indoors to outdoors, from cities to villages, from plains to mountains, from deserts to oceans. A truly dust-free space can only be created in the laboratory. Dust is the destroyer of breathing, which can block the nostrils, inflame the trachea, injure the lungs, and cause infectious diseases such as colds, influenza and pneumonia. If the dust is mixed with tuberculosis, it is even more dangerous. Therefore, spitting must be prohibited. In addition, metal dust, especially lead, can poison people; Lime and cement dust can damage our lungs and corrode our skin; Pollen can cause asthma. In this case, in order to resist the invasion of dust, we must wear masks or masks. Finally, dust will not cause explosion, which is a serious accident and must be prevented. Therefore, we should pay more attention to washing hands and bathing frequently, and pay attention to environmental hygiene and personal hygiene. Let's have a better body.

Like 1, 18 1 browse 20 17- 10-27

What do you think of dusty travel?

Dust is a traveler. It is very small. It drifts with the turbulence of the air and travels around the world with the wind. The air around us is almost everywhere, from indoors to outdoors, from cities to villages, from plains to mountains, from deserts to oceans. A truly dust-free space can only be created in the laboratory. Dust is the destroyer of breathing, which can block the nostrils, inflame the trachea, injure the lungs, and cause infectious diseases such as colds, influenza and pneumonia. If the dust is mixed with tuberculosis, it is even more dangerous. Therefore, spitting must be prohibited.

5 likes 52 browse 2020-06- 16

The main content of Dust Travel is 50 words in Grade Three?

Dust Journey mainly introduces us to the characteristics, volume, size, source and harm to human health, which makes us realize that in order to be healthy, we must control dust and protect the environment. Dust fills all the spaces around us and can only be seen when the sun shines on the dark room. The amount of dust varies from place to place. Dust also has a great influence on meteorological changes. There are many sources of dust, which may come from nature or cities. Dust can also cause diseases. Nowadays, people are trying to make dust benefit mankind. Extended information "Dust Journey" fragment: Dust is a tireless traveler on the earth, and it drifts with the turbulence of the air. The air around us is almost everywhere, from indoors to outdoors, from cities to villages, from plains to mountains, from deserts to oceans. A truly dust-free space can only be created in the laboratory. Dust is invisible under a clear sky. Only when the sun shines into the dark room through the cracks in the shutters can you clearly see countless dust flying in the air. Of course, big dust can be seen by naked eyes, and small dust is smaller than bacteria and cannot be observed by microscope.

29 likes 676 browse 2020-07-04

What new knowledge will a couple have after reading this essay?

Dust is a tireless traveler on the earth, and it drifts away with the turbulence of the air. The air around us is almost everywhere, from indoors to outdoors, from cities to villages, from plains to mountains, from deserts to oceans. A truly dust-free space can only be created in the laboratory. Dust is invisible under a clear sky. Only when the sun shines into the dark room through the cracks in the shutters can you clearly see countless dust flying in the air. Of course, big dust can be seen by naked eyes, and small dust is smaller than bacteria and cannot be observed by microscope. According to scientists' test results, on dry days, there are about 654.38+ million grains of dust per cubic centimeter in the air on city streets. In the air above the ocean, there are about 1000 grains of dust per cubic centimeter; In the air of wilderness and mountainous areas, there are only dozens of dust particles per cubic centimeter; There is much more dust in the air in residential areas. So much dust wandering in the air has a great influence on the weather. It turns out that Dust is still a small engineer who makes clouds and raindrops. They will help the moisture in the air condense into clouds and raindrops. Without them, there would be no white clouds roaming in the sky and no heavy rain and light rain. Without them, in summer, the strong sunshine will shine directly on the earth, making the temperature unable to drop. This is the role of dust in nature. In the quiet air, dust began to fall at different speeds, so that after many days, the roof, doors and windows, bookshelves, desktops and floors were covered with dust. These dust will rise again because of the turbulence of the air, and the wind will blow them far away. 1883, on an island in Indonesia, a volcano named Krakato erupted. During the volcanic eruption, most of the island was blown up, and the finest volcanic dust rose to 80 thousand meters-eight times higher than Mount Everest, and traveled around the world, staying in the air for more than a year. This is the longest and dusty trip. If we ask, where did the dust come from? What the hell are these things? We can get the following series of answers: some are fragments from mountains, some are dry soil dust from fields, some are salt powder produced by evaporation of sea waves, some are volcanic ash mentioned above, and some are cosmic dust collected from interstellar space. These are all natural dust. There are also artificial dust, mainly smoke from chimneys, as well as cement factories, metallurgical factories, chemical factories, ceramic factories, sawmills, textile factories, woolen mills, flour mills and so on. These factories are all dust factories. In addition to these inorganic dusts, there are also organic dusts. Organic dust comes from the hometown of living things. Some come from plants, such as pollen, cotton wool, catkin, seeds, spores, etc., as well as various bacteria and viruses. Some come from animal homes, such as dander, hair, bird feathers, cicadas, eggs, pupa shells and so on. And human and animal droppings. There are many kinds of dust that are harmful to human life. Since organic matter joined the dust team, this kind of harm has become more serious. What harm does dust travel do to human life? They not only pollute our air, but also pollute our houses, walls, furniture, clothes and the skin on our hands and faces. They fall into the lathe and will wear the smooth parts of the machine; They stay in the cylinder and will hinder the piston of the internal combustion engine; They will also destroy our industrial products and turn them into waste products. These are still small things. Dust is also mixed with bacteria and viruses, which are the most dangerous enemies of our health. Dust is the destroyer of respiratory tract, which can block nostrils, inflame trachea and injure lungs, and cause infectious diseases such as cold, influenza and pneumonia. If the dust is mixed with tuberculosis, it is even more dangerous. So spitting must be forbidden. In addition, metal dust, especially lead, can poison people; Lime and cement dust can damage our lungs and corrode our skin. Pollen can cause asthma. In these cases, in order to resist the invasion of dust, we must wear masks or masks. Finally, dust can lead to explosion, which is a serious accident and must be prevented. Therefore, dust must be supervised by human beings and cannot be allowed to fly around. We should asphalt roads, let water trucks spray water on the streets, turn cities and industrial areas into gardens, let every factory have ventilation equipment and dust collection equipment, and let all production processes and workers be strictly protected. In recent years, scientists have invented the method of capturing dust with high voltage current. Human beings are trying to control the progress of dust, so that they are no longer the scourge of human beings, but serve the interests of human beings.