1. The origin of the Olympic Games

1. Ancient Olympic Games

The ancient Olympic Games with written records began before776Year.At that time, ancient Greece was200Many large and small city -states.B.C.776Year,3The king of the city -state reached an agreement and decided to be in7By the middle of the month8Religious celebrations held in Olympia in the middle of the month -sports conference, every4Once and agreed to stop war during the celebration, so that athletes and audiences can participate in the Olympic Games and return safely.This is the famous "Olympic Sacred War".The ancient Olympic Games was held together293At the end, until AD394The year ended due to foreign invasion and other reasons.1170Year.

2. Modern Olympics

The Olympic Games is an international comprehensive sports meeting hosted by the International Olympic Committee and is held every four years.Divided into summer Olympic Games, summer Disabled Olympic Games, winter Olympic Games, winter Disabled Olympic Games, summer Youth Olympic Games, winter Youth Olympic Games, World summer Olympic Games, World winter Olympic Games, summer Olympic Games,winter Deaf Olympic Games.In the Olympic Games, various countries use sports to exchange cultures of various countries and to learn about sports skills. The purpose is to encourage people to continue sports.

The Olympic Games first originated in ancient Greece and was named after Olympia because of its hosting place.19At the end of the century, Baron Gu Barn, France, founded the true modern Olympic Games.from1896The Olympic Games will be held every four years at the beginning of the year (three times have been interrupted in two World War, which are1916Year,1940Years1944Years), the meeting period does not exceed16sky.because1924The winter Olympic Games has been set up in the year, so the Olympic Games is also used to the "summer Olympic Games".The Olympic Games has now become a symbol of peace and friendship.

2. The meaning of the five -ring flag of the Olympic Games

The Olympic Five Ring Road (or the emblem of the Fifth Ring Road and the Olympic Games) is five interoperable ring.The color is white.The Olympic 5th Ring Road was Yu Bay, the former Chairman of the International Olympic Committee and the founder of the Modern Olympic Games1913The annual design was selected because the color of the national flags of each member country was summarized, but it gave more connotations to the Five Ring Road.1979The Olympic Review published by the International Olympic Committee pointed out that the five rings symbolize the unity of the five continents. Athletes around the world meet in the Olympic Games with a fair, frank competition and friendly spirit.

3. The purpose of the Olympic Games

1. Basic principles

The Olympic Charter clearly stipulates that the content of the Olympic Movement is to serve sports for the harmonious development of human beings to improve human dignity; with the spirit of friendship, unity and fair competition, promote the mutual understanding of young people, and thus help establishmentA better peaceful world; make the world athletes every time4Once a grand sports festival-The Olympic Games meet together.

2,Basic meaning

The purpose of the Olympic Movement has the following basic meaningsThefirst,,The goal of the Olympic Movement is to promote the development of human society in the direction of truth, kindness, and beauty.Since entering the industrial society,,While human society began to have large -scale and all -round exchanges, there was a severe international conflict.,,Coupled with human beings mastered the weapon to destroy their own,,Make today's society facing unprecedented threats.also,Contemporary world countries are facing many problems that can be cope with common cooperation,,Such as the environment, refugees, regional conflicts, trade barriers, etc.The Olympic Movement is trying to set up a bridge between people to communicate between people from all countries,,Promote mutual understanding between people with different nations and different cultures,,Promote world peace,,Reduce the threat of war.The purpose of the Olympic Movement is consistent with the goals of human social justice.,,To a certain extent, it meets the needs of the modern international community,,It has direct practical significance for humans since entering modern society.The purpose of the Olympic Movement,,Make it an important part of the world's peaceful cause,,Therefore, it determines its important position in the contemporary international community.

Second,,The Olympic Movement is trying to use the humanistic spirit as a way to achieve its own purpose,,Establishing friendship between young people around the world.As the Fourth Chairman of the International Olympic Committee Ederson said:"The Olympic Games cannot force people to accept peace,,But it provides opportunities for young people around the world like pro -brothers."

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1. How much is the Underwater propeller?

An Underwater propeller allows anyone who can't swim to gallop in the pool and the sea.There are two trigger buttons at the grip.As soon as he holds hard, the pusher starts to work.You just need to hold the handle and do nothing.The propeller rotation in the pusher generates thrust, which can drive you forward, up to 40 meters deep underwater!Is it very exciting?So how much is the Underwater pusher?

At present, the price of Underwater pusher is between 2000-7000 yuan. The differences, size, materials, brands, etc. of the Underwater pusher can cause price differences.

2. How to choose Underwater propeller

Some underwater pushers are suitable for snorkeling or low depth diving, and some are more suitable for deep diving, technical dives or cave diving.There are many factors to consider to buy a pusher, and their characteristics and how you will use are important.

1. The maximum diving depth is first to be considered. If you plan to dive for 30 meters, then a pusher with a limited depth of 5 meters is not suitable for you.

2,Then you need to consider the battery life and model. If a pusher can only work for 30 minutes, it is not suitable for shore potential.

3. The weight of the pusher is actually very important because you need to move and maintain it on the road.

1. How to stand up on the surfing board

Athletes stand on the surfing plate, or use a water movement that controls the waves such as abdominal plates, Kneeling boards, inflatable rubber pads, rowing rowing, kayaks, etc.No matter which equipment is used, athletes must have high skills and balance ability, and at the same time be good at swimming in the middle and long distances.So how do you stand up on the surfing board in the actual operation?

The surfing movement is the athlete's proling or Kneeling on the surfing plate, and draws the starting point where there is a suitable wave.When the waves are pushing the surfing board to slide, the athletes keep the surfboard standing up in front of the waves, and open the front and back of the legs (usually the balanced legs are in front, control the legs behind).Waves, fast gliding.

2. Why can't the surfing board sink

The root cause is buoyancy.For surfingboards, the value of buoyancy and gravity determines that the surfboard will not sink.

There are two causes of buoyancy:

1. The density of the surfboard itself is less than water. The buoyant caused by the part that is not soaked under the water can offset gravity.

2. The shape of the surfing board determines that it has a larger volume of water (which is related to the slightly rolling of the bottom area and edge), which causes a large buoyancy to offset gravity.If the bottom area of the surfing board is small, there will be no chance to get enough buoyancy.

The pressure is just a manifestation of the effect of the interaction between the surfing board and the seawater, and does not determine the ups and downs of the object.Water's force on surfing boards is buoyancy and not support.If it is supported, it is related to the size of the pressure.

1. How to use Underwater propeller

For us, the underwater world has always been magical, attracting people who explode to explore and watch.The diving sport itself has a strong sense of excitement. It is a project that many people with adventure spirit want to try.During diving, the Underwater propeller is a very important device. Let's see how the Underwater pusher use it!

It is equipped with powerful propellers at both ends, which can generate 17.66ibf thrust underwater, allowing you to keep your visual water resistance and move forward quickly.This propeller does not need to be too complicated. You only need to hold the propeller tightly with your hand to ensure that the propeller does not fall, and the operation is very simple.

At its handle, there are two trigger buttons. You only need to grasp this handle and change the direction of controlling the underwater forward by the left and right tilt.When you want to stop, you release these two buttons, and this device will slowly stop.Such a simple operation should be a child, you can quickly grasp and try it!

two,Underwater propellerWhy can I bear 10,000 meters of water depth

The pusher of the Underwater pusher uses advanced magnetic coupling driving technology. This technology greatly reduces the impact and vibration of the pusher during the operation of the pusher, extend the life of the pusher, and all electrical components are absolutely sealed in a sealing sealIn the cabin, the risk of seal leakage is reduced.

In response to deep water ultra -high -pressure and strong working environment, the pusher applied a special oil -supply self -compensation structure. On the one hand, the propeller independently overcome the risk of leakage of the sealing cabin in the super high -pressure strong working environment. On the other hand, it also greatly reduced the propellerMaintenance difficulty.The fusion design and precision process of machinery, electricity, and paddle make the product efficiency, noise, and power density of product efficiency, noise, and power density.Excellent overheating protection, overcurrent protection and other functions ensure the reliability of product operation.Special metal surface treatment technology ensures the mechanical strength and salt -resistant corrosion capacity of the product.

Adidas Marvel Co -famous shoes

iron Man-Harden Vol .3

Compared with the traditional iron Man's theme, most of the theme of the iron Man only uses red gold color coloring. This time, the combination of Marvel and Harden Vol.3 is truly to show the mechanical feeling and science fiction of the armor.

The toe and heels are characterized by the unique stereo -lines unique to iron Man armor. Adidas's logo is still an old position and uses yellow as a color matching.The soles of the shoe are made of dark red, red, and white.The tongue is made of mesh material and iron Man's helmet logo, and red is the main color matching. It not only conforms to the color of the Rockets' uniform, but also in line with the iron Man's Battle.

Black Panther-Dame 5

This time Dame 5 transformed the black leopard combat clothes into the shoe body. Compared with the four generations, I was inspired by the Black Panther Fighting necklaces. This time, the shoe body was divided into two.

The overall color matching is mainly black and noble purple supplemented. The toe is mainly triangular decoration. The toe also adds purple decoration for protection. The second half of the sneakers is intersecting black adidas logo and black purple woven.The quality of the material is used as a protection, and the intriguing part is wrapped in the pores as embellishment. The tongue has a black leopard logo. The sneakers feel low -key and luxurious as a whole!

Nick Frey (Director) -t-Mac 1

This pair of T-Mac 1 reflects Nick Frey's iconic black trench coat shape through a cool black dress with patent leather details. Later, with the Aegis Bureau LOGO, it shows the contribution of the Avengers' excellence!

The advantage of these co -branded models is that the surface of the shoe body is leather. The toe is mainly designed with 6 horizontal bars, and black is the main color. The director Nick often appears in a black suit.There is a LOGO of the Aegis Bureau below the heel, and the soles are intersecting multi -patterned blue and black.

Beauty Team-N3XT L3V3L

The US version of the N3XT L3V3L presented the iconic huge shield element in the crystal outsole, stitching left and right, exquisite and domineering!

In terms of color schemes, the color matching of the US team is blue -based, red and white.The entire shoe body seems to be weaving. Adidas is only reflected in the back heels. There are three types of colors with pentagrams with a five -pointed -stars. The soles are very thick. There is no problem with basketball!

Captain Surprise-PRO VISION

This pair of Adidas Pro Vision perfectly restores the most impressive warfare logo of Captain Surprise. The red and blue bright tones are supplemented by yellow stars and lines. The visual impact is extremely strong!

The color matching is mainly blue, supplemented by red, and white occupies more soles.The entire shoe body is embellished with two yellow lines.The toe has a small sign of pentagram, and the tongue is engraved with the English letters of ACE. The unique pattern of the soles makes these shoes more anti -slip and wear resistance.

Destroyer-KT

The signature of the Warriors Thompson is at the heel, as well as the cute jaw element of the Da Da Da Da Da. If you do nt look carefully at the heel, you cant see that the Da Da Xiaoyi is more lovely to give you a heart (one heart, half of the people do nt see it.), The six shoelaces are cleverly representing the six rough stones of unlimited gloves, and the two shoes on the left and right are also very hidden.

Adidas series products recommendation & gt; & gt;