5 . Imagine the feeling of swinging at a baseball going 100 miles per hour—without leaving your living room, or being in race car as it roars down the track, while you are sitting on the couch.

These are just some of the ways that sports business leaders say virtual reality (VR) will revolutionize how people train for and experience sports. Virtual and augmented（增强的）realities are together known as mixed reality (MR). “American footballers are already using VR to better train their minds and read the field,” Ludden said. “This can allow players to perfect their skills without risking injury.”

Canadian company D-BOX Technologies designs and produces moving seats found in cinema and theme parks. It is now moving into sports, and shows its Formula One (F1) racing simulator （模拟器）. The seats stimulate the force of gravity, speed and every shaking as Fl champion Lewis Hamilton zips around city streets.

A simulation seat uses pre-programed data now. Someday, though, it could use real-time information sent by the car. “They could broadcast live content through a network in pop-up theaters around the world,” Ludden said. Say you want to experience the true stress of a batter being up against major-league baseball pitcher. “You can have a heartbeat added to the sensation on the seat and then you can feel it, boom, boom,” Maheu explained. “When he swings and hits the ball, you can have an impact.”

One day, fans around the world could physically experience every game from their favorite player in real time. Ludden said that current and near-future technology could create “augmented stadiums” for live audiences. Panasonic launched its “Smart Venue” plans which included the overlaying of graphics, advertisements, player statistics and replays on the field of play at a pro football game. “If you are seated in the cheap seats, you can see this really useful.” “Fans may someday join in stadium wide games, using the field as a virtual gaming platform,” Ludden added.

6 . There are many benefits of rock climbing for kids. The most obvious ones are physical. Rock climbing is an intense physical activity requiring strength and flexibility. For senior climbers, rock climbing can be a good way to build strength while completing certain courses.     1     Even though rock climbing may not seem as intense as running, it does work to keep the body healthy.

    2     Rock climbing requires strategies and focus in order to make it to the top. Children who have difficulty concentrating can often develop their mental focus through rock climbing. A feeling of accomplishment might also be seen as a mental benefit. This often encourages increased physical activity to meet the next challenge.

Rock climbing is generally not competitive for children. Some children are shy or uninterested in competing with others.     3     However, activities like rock climbing do involve social skills, but they do not involve the same type of cooperation as a team sport.

Some parents may be concerned that rock climbing for kids is not safe because of the heights involved. However, when all safety measures are observed and the child is well informed about the dangers of the activity, the danger involved could be almost entirely cleared.     4     This makes the activity even less dangerous.

Parents can climb with children and learn together. This activity is a great bonding experience for climbers of all ages, which can be excellent for the children involved.     5    

7 . As we know, the 2020 Summer Olympic Games is delayed to 2021 for Convid-19.

It's Tokyo's second time hosting a Summer Olympics, 57 years after their first time in the spotlight. These Games will see the introduction of some exciting new sports to the lineup (阵容), too: skate boarding will make its Olympic debut, as well as karate (空手道), surfing and sport climbing.

There will be plenty of classics to watch as well, from the ever — popular swimming and gymnastics (体操) events to track and field (田径) and team sports. And while Olympic trials have yet to take place, we'll most likely be seeing the return of superstars like the 2016 gymnastics standout Simone Bilesimming record — setter Katie Ledecky and track star Sydney McLaughlin, who was just 16 when she competed in the Rio Olympics and has been on the rise ever since.

The 2020 Summer Olympics will begin on July 23, 2021 and run until Aug 8, 2021, with the opening ceremony on July 23 and the closing ceremony on Aug 8. In between, audiences around the world will tune in to two weeks of nonstop sports. Most of the big swimming events will take place over the first week. while the track and field competitions ramp up (进展) in the second half.

For the second time in its history, Tokyo is hosting the summer Olympics they first hosted back in 1964. (Japanhas also been home to two Winter Olympics, at Sapporo in 1972and Nagano in 1998.) Tokyo is the first city in Asia to host an Olympics twice.

There are many changes to the Olympics this year. The biggest change to the Olympics for 2020 is the addition of the five new sports and the return of baseball (absent in 2016), plus a few new events, like the three-on-three basketball competition.

One change sure to receive a lot of attention are the adjusted gymnastics team rules: instead of fielding a team of five athletes, each country will be whittled down to four all-around contestants (参赛者), with two more teammates added to compete only in individual events.

8 . Figure skating(花样滑冰), as we know it, got its start in the mid-19^th century when an American named Jackson Haines combined dancing and skating for the first time. Americans did not accept Jackson’s technique at that time.     1    There he achieved an immediate success. And about 50 years later, Jackson’s style finally caught on in the United States.

    2     Figure skating first appeared at the London 1908 Summer Games, while the first Winter Games was held in 1924.

In single skating, each skater performs a short routine of required steps.     3    The pain skating follows the same format, but with one male and one female performing together.     4     Bu unlike pair skating, ice dance does not include overhead lifts and jumps. An ice dance competition is made up of three parts: one part is set to music that has a required rhythm and tempo and the other two parts are set to whatever music the ice dancers choose.

A panel of mine judges scores the quality of each figure skating performance, but only scores of seven judges are used. To determine which judge’s scores will be used, there is a random draw before each event. Skaters are given a grade for each step, jump, spin, or any other element that is part of their routine. They also receive an overall score for each performance.     5    

10 . Alysa Liu is an ice skater. In 2016, the then 10-year-old girl became the youngest intermediate figure skating （花样滑冰）champion in U.S. history. In 2018, Liu became the youngest to compete in and win the U.S. junior championships.

In January, 2019, she made history again at the Geico U.S. Women's Figure Skating Championships. At the championships, things were initially going well for the defending U.S. champion Bradie Tennell. But later Tennell had a falling in her performance. Meanwhile, Liu became the first and youngest U.S. woman to land three triple axels （三周半跳）in competition.

Though Liu made them look, easy, triple axels are extremely challenging. The skater has to jump from the outside edge of one skate, turning in the air. "Double" or “triple" refers to the number of rotations （旋转）the skater completes before landing. The term is a little misleading given that the skater has to do an extra half rotation, meaning that for a triple, the skater is actually completing 3.5 rotations. To be successful, the skater has to have both incredible body strength and control.

When asked about her great performance, Liu thought it was not worth showing off. And she was enthusiastic about preparing for bigger games. But Liu was ineligible to compete at the 2019 World Figure Skating Championships in Japan due to the minimum age requirement of 15. However, that didn't bother her.

Liu fell in love with ice skating during her first lesson at a center. She showed such talent that Laura Lipetsky, who was teaching the group lessons, asked her father to let her receive private lessons. Lipetsky said, “She wanted to learn, and I wanted to guide." The two have been inseparable since then. In 2017 Laura sent Liu to the University of Delaware for a certain analysis that researchers have created to help outstanding American skaters improve their jump techniques.

Liu has been homeschooled since the age of 10. She gets her homework done between daily practices, and usually eats dinner in the car on her way home. Though that might appear to be a lot for someone so young, Liu takes it happily.