During the Beijing 2022 Winter Olympics, athletes from all over the world broke both personal and Olympic records. High-tech elements have been giving “wings” to these hard-working athletes, helping them become “faster, higher, stronger”.
       The National Speed Skating Oval (the Ice Ribbon) saw 12 new Olympic records and one world record, including Chinese speed skater Gao Tingyu’s Olympic record of 34.32 seconds in the men’s 500 meters.
   Known as “the fastest ice”, the 12,000-square-meter rink (冰场) has received very good feedback from the athletes. “It makes everyone skate faster,” Gao Tingyu said after he bagged the gold.
       The secret behind is a new carbon dioxide (二氧化碳) ice-making technology. Speed-skating requires a very flat (平滑的) ice surface. If the ice surface temperature doesn’t change much, the ice stays flatter. Flat ice is easier to skate on. Liquid (液态的) carbon dioxide was put under the ice for the first time. It cooled the ice and kept the temperature changes on the surface within just half of one degree.
       In events like freestyle skiing and ski jumping, the direction and speed of the wind could largely affect athletes’ performance. A research team from the Chinese Academy of Sciences developed a wind measuring (测量) system using AI technology. “Some events only last a few seconds, and the wind is changing all the time. This system allows athletes and coaches to ‘see’ wind directly through real-time data on their pads, and decide when and where to jump,” the team leader Shao Yun told Beijing Daily.
       There are many more high-tech elements that boost athletic performance, including drag-reducing (减少阻力的) sportswear, smart beds that massage (按摩) athletes, and robots that cook. All these helped keep China’s promise to hold an “athlete-centered” Olympics, said Zhao Weidong, the spokesperson of the Beijing organizing committee.

Robots seem very new to most people. But they have a long history. The first one was made by a Greek inventor. You may have seen robots in some films. The robots in these films are stronger, faster and cleverer than people. In real life, most robots are used in factories. They are used to do many dangerous, difficult or boring jobs. Some people can’t look after themselves and robots are used to help them. For example, some people can’t see. Many of these people use a dog to help themselves move around. This dog is called a guide dog. Scientists are making a robot to help them. In the future, robot dogs might take the place of these guide dogs.

Robots are also used in American hospitals. At one hospital, a robot takes from the kitchen to the sick people’s rooms. It never loses its way because it has a map of the hospital in its computer system.

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