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How many swimming positions are there in swimming？

Everyone knows that swimming is very good for people’s health, and many people are keen on swimming now, so in this case, everyone has done some research on swimming. Many people are looking for their favorite postures when swimming in school, but they don’t know much about the specific and separable postures. Here are some specific introductions about swimming.

freestyle

One of the swimming events. In 1896, the first Olympic Games began to be listed as an official event. Freestyle is not limited by any posture, crawl is the fastest, and crawl has become the only posture of freestyle. Crawling is like crawling, that is, paddling with both arms alternately and kicking with both legs alternately. This kind of swimming posture has reasonable structure, small resistance and even speed, and it is the fastest and most labor-saving swimming posture in the world at present.

The basic technical characteristics of freestyle are that the human body is prone in the water, with its head and shoulders slightly higher than the water surface. When swimming in, the trunk rolls around the longitudinal axis of the body appropriately, and the arms take turns paddling to push the body forward. After the hand enters the water, the paddling route is S-shaped, and the breathing and paddling movements are coordinated. When the arm paddles hard, use the water flow to inhale in the valleys formed on both sides of the head.

breaststroke

Breaststroke is an ancient swimming style. According to records, as early as 2000 ~ 4000 years ago, China, Rome and ancient Egypt had similar swimming styles. On August 24th, 1875, the famous swimmer M Webb swam across the English Channel in breaststroke, which lasted for 21 hours and 45 minutes. In the early 19th century, breaststroke was the first position adopted in swimming competitions. However, due to the slow speed of breaststroke, there are fewer and fewer people who swim sideways, crawl and use breaststroke in the competition. It was not until the third Olympic Games in 1904 that breaststroke was separated from other postures.

butterfly stroke

During the period from 1924 to 1936, the biggest innovation of breaststroke was that after the stroke, the arms were no longer moved forward from the water, but the arms were moved from the air but the legs were still clamped by breaststroke, and the deformation of breaststroke-butterfly stroke appeared. In butterfly swimming, the body lies prone in the water, and relies on the powerful strokes of the arms and the wavy strokes of the legs to push the body forward. There is no fixed body posture.

backstroke

One of the swimming events. In 1900, the 2nd Olympic Games began to be listed as an official event. Backstroke includes backstroke and crawl backstroke. Reverse breaststroke is the earliest backstroke, which is similar to breaststroke in action and opposite in body posture. That is, the human body lies on its back on the water, and its arms paddle backwards from the head to the side. In the first few Olympic Games, the backstroke was held in an anti-breaststroke position. When backstroke, the body lies almost horizontally in the water, the chest naturally stretches in line with the abdomen, the head is submerged in the water, and the face is exposed to the water. When swimming in, the head always maintains an upright posture, and the trunk naturally rotates around the longitudinal axis due to the alternate paddling action of the two arms.

How many swimming positions are there in swimming? Different postures in swimming bring different exercises to different parts of people’s bodies, because everyone knows that swimming can exercise all parts of people’s bodies, so swimming is very good for everyone to exercise healthily.

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You should know these basics when you first meet baseball.

1. What is the ball made of? How big and how heavy is it?

The outer layer of a baseball is tightly sewn with white horse skin or cowhide, and its center is made of round cork, rubber or similar substances and wound with hemp thread.

Generally speaking, a ball is 7.5 cm in diameter, 141.7-148.8 g in weight and 22.9-23.5 cm in circumference.

Step 2 get to know the bat

The bat should be made of a whole piece or more than two pieces of wood. It is less than 1.07 meters long and less than 7 centimeters wide.

Professional baseball players are not allowed to use metal bats. Only amateur and high school baseball players can use them.

3. Baseball gloves

The pitcher’s gloves should be the same color, except white and gray. The color of decorations on gloves must be the same as that of gloves.

Step 4 dress

Players of the same team should wear uniform colors and styles, and baseball-related patterns and shiny decorations are not allowed on the clothes.

Step 5: Protective gear

Batters and base runner should wear protective hats with ear protection, and they must wear protective hats, face protection, chest protection and leg protection when taking over.

(Sports International Football) FIFA： Saudi Arabia is the only bidder for the 2034 Football World Cup.

Xinhua News Agency, Geneva, October 31 (Reporter Shan Lei) On October 31, FIFA announced that Saudi Arabian Football Association was the only football association to submit an application for hosting the 2034 Football World Cup before the deadline.

FIFA confirmed that it has received an application from Saudi Arabia to host the 2034 World Cup, and Saudi Arabia is the only country that has expressed its interest in hosting the 2034 World Cup.

Previously, FIFA had announced that the only application for hosting the 2030 World Cup was jointly submitted by the Football Associations of Morocco, Portugal and Spain. At present, these three countries have confirmed their willingness to bid. As the centenary celebration of the World Cup will be held in 2030, FIFA plans to hold a World Cup in Uruguay, Argentina and Paraguay, and these three countries have also confirmed their willingness to host the World Cup.

Like Morocco, Portugal and Spain, Saudi Arabia still needs to pass the FIFA audit. If these bidding countries can meet the requirements of FIFA and go through the whole bidding process, then FIFA will determine its right to host at the FIFA General Assembly at the end of 2024. (End)

Sports commentary： deepening the integration of sports and education to help the sustainable development of football in China

On July 10th, China Football Association President Chen Xiaoyuan (first from left) announced the start of the first China Youth Football League. Xinhua News Agency reporter Jianghan photo

　　Xinhua News Agency, Hangzhou, July 10th Sports commentary: deepening the integration of sports and education to help the sustainable development of football in China

　　Xinhua News Agency reporters Gong Bing, Xia Liang and Xiao Shiyao

　　Guided by the Ministry of Education and the State Sports General Administration, the first China Youth Football League sponsored by China Football Association was launched in Hangzhou on the 10th. Up to now, 2329 teams have signed up for the competition. As the competition time of different groups is different, more teenagers will participate as more groups start to register. This is a national single sports event with a distinctive imprint of the integration of sports and education, and it is a practical implementation of the "Overall Plan for the Reform and Development of Football in China", or it will effectively promote the reform of school sports, bring a demonstration and leading role to the integration and development of sports and education in other sports, and lay a solid foundation for the reform and development of football in China.

　　The launch of China Youth Football League means that the integration of sports and education in youth football has ushered in a substantial breakthrough in competition design and execution. The league will break the identity and qualification restrictions of contestants, and teams from schools, sports schools, club youth training echelons and social youth training institutions can participate. From the system design, the league will be built into a platform for cultivating and discovering young football talents, and the channel for professional football talents to enter the campus will be more smooth. Football seedlings in school also have more room for expansion in professional training and development.

　　The launch of China Youth Football League is a powerful measure to promote the reform of school physical education. At the end of 2014, the Ministry of Education took campus football as the breakthrough and experimental field of school sports reform. So far, 32,780 characteristic schools of campus football have been set up in China, with more than 55 million young students participating in campus football activities, which laid a good foundation for popularizing football and expanding the football population.

　　School physical education follows the educational concept of health first, helping students enjoy fun, strengthen their physique, improve their personality and temper their will in physical exercise. China Youth Football League aims at the healthy development of young players, insists on paying equal attention to cultural education and professional training, and trains socialist builders and successors with all-round development in morality, intelligence, physique, beauty and labor, which is a practical follow-up to the concept of school physical education. In recent years, school physical education advocates students to master a sports skill and cultivate lifelong sports habits. Under the framework of the system design of the integration of sports and education at the national level, the China Youth Football League with the characteristics of the integration of sports and education will be launched, which will promote the development of school sports reform in depth.

　　The launch of China Youth Football League is an in-depth implementation of the "Overall Plan for Football Reform and Development in China". The plan of foot reform has been issued for more than seven years, which has pointed out the correct direction for the reform and development of football in China, and achieved some positive results. However, due to the weak overall foundation of football in China and the time needed for system construction, the results of the men’s football national team competition were poor or even missed, and professional leagues suffered multiple crises such as unpaid wages, withdrawal and dissolution of clubs. At present, the football situation in China is grim.

　　Because of this, it is more necessary to lay a solid foundation, and the sustainable development of youth football has become the key to solving the problem. The "Overall Plan for Football Reform and Development in China" puts forward: "Promote the large-scale growth of young football talents." China Youth Football League will be a powerful driving force to achieve this goal. As a unified competition platform, China Youth Football League can not only examine the potential of national football teenagers, but also further help to build a scientific, efficient and complete youth training system. Only with a solid foundation and long-term achievements can China football usher in a bright future.

Three years and 186 million dollars, the Lakers shot! The average salary is 62 million, which is the first in history!

Rich Paul, the agent of Thick Eyebrow, revealed that Thick Eyebrow has reached a three-year contract with the Lakers with a maximum salary of $186 million. The average salary of this contract reached $62 million, which is the highest average salary renewal contract in the NBA.

Today, it is the first day that Thick Eyebrows get the qualification to renew their contracts in advance. According to ESPN, Pelinka, the general manager of the Lakers, contacted Ricky Paul at the first time and sent him this high contract renewal. And heavy eyebrows didn’t think too much, and readily agreed.

Also, the previous news was that the maximum amount of thick eyebrows should be only 170 million in three years, but the Lakers directly gave 186 million dollars. Juxin is more than 60 million yuan, so we really have to agree quickly, lest the Lakers go back on their word. After this renewal contract comes into effect, thick eyebrows will become the highest-paid player in NBA history. Some people may say, what about the previous five-year $304 million contract in Jaylen Brown? Jaylen Brown’s share is the largest contract, exceeding $300 million. On average, the annual salary is $60.08 million, not as much as heavy eyebrows. The maximum salary varies with the salary cap every year, so the annual salary of Brown’s contract is $52.15 million, $56.32 million, $60.49 million, $64.66 million and $68.83 million respectively.

Thick eyebrows and the Lakers have two years left in their original contract, plus a new contract extension of three years. So the annual salary for the next five years is 40.6 million US dollars, 43.2 million US dollars, 57.6 million US dollars, 62.2 million US dollars and 66.8 million US dollars respectively. Therefore, this is really the biggest contract that the Lakers can give thick eyebrows. At present, the five NBA5 contracts with the highest average salary are $62 million, $60.7 million from Brown, $59.9 million from Lillard, $58.7 million from Booker and $58.7 million from Downs. Did you expect Downs to get such a big contract? Among them, Lillard is 33 years old, Thick Eyebrows is 30 years old, Downs is 27 years old, and Brown and Booker are 26 years old.

It can be seen that the Lakers want to keep the peak of heavy eyebrows in the Lakers as much as possible. Although it is said that thick eyebrows are fragile, there is such a set of data. In the past seven seasons, thick eyebrows have played 400 games, surpassing Embiid’s 394 games, Curry’s 387 games, Owen’s 362 games and Durant’s 345 games. That’s it. I haven’t come up with Leonard’s data yet Therefore, although the heavy eyebrows are brittle, they are actually not so brittle. Small injuries do continue, but at least they have not been seriously injured. And compared with other superstars, the appearance rate of thick eyebrows is ok. Moreover, the Lakers also intend to reinforce the fifth position to share the pressure for the thick eyebrows and avoid more injuries.

One more thing to note is that there are two years left in James’ contract with the Lakers, which means that the year when James’ contract expires is the year when Heavy Eyebrows’ new contract takes effect. So is it understandable that the Lakers are preparing for James’ retirement and keeping the team competitive?

It’s just that the ability of heavy eyebrows to lead the team alone is really not excellent. I don’t know if the 32-year-old heavy eyebrows will still have the explosive power of the pelican period. Of course, there is no shortage of attraction in Los Angeles. Will other super giants join after James retires?

＂Creativity is infinite, and high-quality articles are under control-how to make soft writing more valuable？＂

Recently, soft writing has become a hot topic on the Internet. More and more people realize that writing is a very important way of communication. In soft writing, the most important thing is to be able to convey information to readers and guide them to resonate.

So, how to make soft writing more valuable? First of all, we need to have a clear goal and orientation. We should consider the needs and problems of readers and turn these problems into high-quality articles. In addition, we can also use some professional tools, such as Tiger Writing AI WeChat official account, to quickly generate articles that meet the requirements.

Tiger Writing AI WeChat official account is a platform that can help us automatically generate articles. It uses artificial intelligence technology, and after inputting keywords, it can quickly generate articles that conform to the text structure, grammar rules and style characteristics. In this way, we can quickly produce high-quality soft articles and improve the reading rate and conversion rate of articles.

In addition to tiger writing AI WeChat official account, we can also push articles to major media platforms by using the publishing platform of Overflow Enterprise to increase the exposure and conversion rate of articles. Yiqi Publishing Platform is a professional promotion service provider, which can help us push articles to various channels, such as social media, news media, forums, questions and answers, etc., so that more people can learn about our articles and then produce transformation effects.

Finally, we need to pay attention to the improvement of personal writing skills. Through continuous study, thinking and practice, we can improve our writing level and make our articles more convincing and attractive.

To sum up, soft writing is a process of continuous learning and exploration. Only by choosing the right platform and tools and paying attention to the improvement of personal skills can we make our articles more valuable. Come and use Tiger AI WeChat official account and Overflow Enterprise to promote your soft writing level!

Bo Yu said sports： Premier League Rome is considering hiring De Zerbi to replace Mourinho, but Tottenham Hotspur and Chelsea are also.

On the other hand, the defense has obviously regressed. The opponent’s shots per possession increased by 27%(0.10), and the average xG was similar. The number of goals per game in Manchester City increased from 0.7 to 1.0. Whether it’s because Guardiola tried his staff to make the best use of Harland-which, among other things, led to the bench of full-back Joao Cancelo and eventually loaned it to Bayern-or because of the conscious retreat of the World Cup in terms of pressure and efforts (Manchester City players played more time in Qatar than any other club), Manchester City’s pressure was more passive and ineffective. Excellent opponents are particularly comfortable and productive for them: in eight games against the top six teams in the Premier League, Manchester City scored a goal in 13 shots (81.10 times per game), worth 11.6 xG.

Please note that Manchester City also scored 19 goals and scored 13 points in these eight games, but Manchester City did not control the situation as usual. Put some terrible luck into a close game-in a game decided by 1-2 goals, the average score per game is 0.1 (the average score of the other four teams in England is 2.1)-and we can see how Manchester City has left the door for Arsenal to break in at present. This also brought RB Leipzig back to the first leg of their last 16 Champions League (final 1-1 draw), and there is still some work to be done before they can advance next week.