【推荐1】I was ten years old when I started watching lawn tennis. Having developed interest in tennis, I started following and gaining knowledge about the game. The play of the 100th seed was the best according to me until I asked my father who is the number 1 ranked player in the world, to which he replied — Roger Federer.

That was it! I watched his play at Wimbledon and really couldn’t stop admiring this personality. His silky smooth movement, flawless serve, unreachable powerful forehand, amazing footwork—all of it was pretty amazing. I started playing tennis because of him; he was undoubtedly my role model. I followed his career off the tennis court and learned things about him that really made me a better person in life.

There is a feeling of joy in each stroke that Federer plays and a feeling of excitement in each thing he does whether it is giving an interview, doing a press conference, practicing on court or mere signing the tennis balls for fans. There is never a dull moment when he is around, which inspires everyone to be happy and joyous in life in whatever they do. One of the most important things about him which inspires me is his sense of humor.

Federer first congratulates his opponents and never shies from telling them they played wonderfully well, and that luck was on his side today or that he had a good day, instead of attributing the victory to his hours of hard work and training. He always looks for opportunities to praise others.

Another admirable thing about Federer is his love for the game. It teaches me that it’s great to do what you love. You can excel in any profession if you love it from your heart; it then becomes no more a profession but a thing of joy from which you can get satisfaction and fulfilment each day you practice it. It is no more a duty but a sense of fulfilment（成就）.

He is the most respected player in the game and everyone feels privileged to play against him, and some don’t even mind losing to him! This kind of respect is not gained in a few days but in many years by achieving perfectionism both on and off the court, by inspiring and motivating generations to come and becoming a part of history, by not just getting awards on the court but also by being a good man. Federer’s energy motivates me to keep moving on and on in my life, fighting difficulties with a smile and cherishing good moments as well as not so good.

【推荐2】Imagine your mind as a library. As pleasant a room as a reader could wish. Now let me describe different sort of library: The bookcases have fallen, their glass fronts broken, and their contents messed across the floor. This one belongs to the disordered, anorexic(厌食) mind. At the age of 15, 3 was the state of my mind. For 10 years, I suffered the mental and physical pain of anorexia.

A new year usually made me nervous: A time for resolutions. In January 2019, I was 24. Ten years after diagnosis, I was what doctors call a “functioning” anorexic. I would eat enough to get by: never with any flavor. That year, I made a different sort of January resolution: To read all novels Dickens by December. Something changed, I began to be curious about food, wanting to share it, taste it. His scenes, his meals made me hungry. It also turned me into a walker. I wanted to see London as he had seen it: At night, on foot.

Siegfried Sassoon also rescued me.The poet recalls cold mornings before a hunt: “We got up at four o'clock, and fed ourselves with boiled eggs.” Stopping in a bush, he has sandwiches , and on the way home he keeps himself warm with thoughts of poached eggs on toast, tea...All those eggs! All that bread! Hot chocolate! (I hadn’t had a cup of hot chocolate in a decade.) With Sassoon as guide, I learnt, at the age of 25, to boil an egg.

Most helpful to my recovery were the words of the wizard Merlyn in T. H. White’s The Once and future King. “The best thing for being sad,” he tells the boy who will become King Arthur, “is to learn something. That is the only thing that never fails. . . ” Too many self-help guides say: Get fit, lose weight, eat right, make friends, find a hobby. . . Better that they should say: Learn something, read something, see something new. Feed your mind.Trigger your appetite for new books, and the other appetites-for food, for friends, for life-will follow.

【推荐1】United Airlines is aiming to have electric aircraft flying regional routes by the end of the decade, part of the company’s goal to fully reduce its carbon footprint to net zero by 2050.

Those battery-powered aircraft are being developed by Swedish start-up Heart Aerospace, from which United Airlines placed an order for 100 planes in July 2021. United Airlines has pushed heavily into a variety of lower-emission forms of aviation, not only announcing plans to buy electric air taxis and vertical aircraft, as well as hydrogen-electric engines but also investing in the companies behind the advanced technologies.

“We cannot continue doing and operating our business the way we do; it is important that we change it, and the way we’ re going to change it is through investing in technology,” Mike Leskinen, United Airlines Ventures president, said in an interview as part of CNBC’s ESG Impact virtual conference on Thursday. “Existing technology is going to either cause us to fly less, which is an unacceptable alternative, or continue with a carbon footprint, which we believe is equally unacceptable,” Leskinen said.

Heart Aerospace, which recently redesigned what will be its first electric aircraft which is now called the ES-30, plans to have the planes enter service in 2028, said Anders Forslund, the company’s CEO and founder.

The 30-passenger planes will be driven by electric motors with battery-derived energy, allowing the planes to have a fully electric range of 200 kilometers. The planes will also include a reserve- hybrid engine powered by sustainable aviation fuel, allowing it to have an extended range of up to 400 kilometers with a full flight.

United Airlines could potentially offer those shorter routes not only with greater frequency but at a lower cost. Leskinen said. “As we adopt electric aircraft, I think the cost for a 30-seat aircraft or a 50-seat aircraft, as the industry evolves, is going to be lower than a traditional aircraft,” he said. For small cities, this means they are “going to get either service that they didn’t have before or greater frequency of service,” he added.

【推荐2】Space travelers on the International Space Station pull twelve-hour shifts(轮班), including six and a half hours of lab work, among other duties. They sleep eight hours, leaving them the other hours to idle in the space. If the timing’s right, they call home to catch up. They watch their schools play football. NASA has sent up playthings like guitars, keyboards, and a saxophone, as well a chess set.

Staying entertained is important because when you’re on long space flights, feeling bored can be dangerous, “It leads to performance errors,” NASA Senior Operational Psychologist James Picano tells me. Breaking a tool is a lot more worrisome when you’re trying to keep a spaceship that weighs hundreds of thousands of pounds on course. In addition, playtime also allows the team to learn pop culture and helps Americans relate to their high-flying stars.

But space travelers might not always have that solid link to Earth. NASA’s plans to go to Mars by 2040 may require a seven-month journey. Maintaining a constant signal over such a vast distance will be tough, but when technology permits, space travelers could watch TV series. NASA is also looking into virtual reality(虚拟现实)so space travelers can spend an afternoon at the beach.

“What will the people we send to space do for fun many years from now, when they’re setting up shop on Mars and the moon?” I ask him. “Boy, I have no idea,” Picano says. But he draws my attention to the South Pole’s McMurdo Station, which once just had a simple bowling alley (保龄球球道)and now has a wine and coffee bar. “We are creators,” Picano adds. “If you send scientists to extreme environments, they will invent ways to stay entertained. It never stops amazing me.”

【推荐3】Mars is truly a fascinating planet for those of us here on Earth. It is about half of the size of Earth and is often referred to as the “Red Planet” because of its red surface.

Mars has seasons like Earth, but the seasons there are twice as long as the seasons on Earth. Mars also has an atmosphere, but it is very thin and made up mostly of carbon dioxide. Because of its thin atmosphere and greater distance from the Sun, Mars is much colder than Earth. However, Mars does have weather, with clouds and winds. The poles on Mars are a lot like Antarctica, capped by ice, but much of Mars’s ice is made from carbon dioxide, not water.

Many scientists believe that studying Mars can help us answer some of the key questions about our planet Earth, or even the universe. But missions to Mars have never been easy. Facing great challenges, many countries will still continue their explorations. Launching the first Mars probe (探测器) from Wenchang around 2020 is China’s first step to explore the “Red Planet”

The Chinese Mars probe is made up of three parts: the orbiter, the lander, and the rover. Entering the Earth-Mars transfer orbit, the Mars probe separates from the launch vehicle. Then the space-to-ground communications link is created. Controllers on Earth guide it into the orbit around Mars. After collecting detailed information about the landing area, the probe is ready for the landing. The orbiter and the lander separate. The orbiter stays in the orbit for at least a year to photograph key areas and monitor the planet’s environment, while the lander heads down to the surface of Mars.

Nine kilometres above the planet, a large parachute(降落伞) opens to slow the landing craft as it falls. After removing the parachute, the lander chooses a safe place to land, where the Martian rover can start operations, collecting and transmitting data back to Earth. After receiving its orders from Earth, the rover leaves the landing point and begins to explore the surface of Mars.