1 . Sweating may not be your favorite thing to do, but it is necessary.     1    . Here are four research-backed reasons why this salt-based fluid can benefit you.

Sweat is known to cool the skin, bringing toxins (毒素) to the surface and giving the skin a healthy glow. Research shows that sweating can increase and maintain skin hydration. However, leaving sweat on the skin for too long can cause skin diseases such as acne.     2    .

When you’re hot, your heart beats faster to cool the body, releasing endorphins that cause feelings of joy.     3    . In a 2015 study, people who smelled “happy sweat” displayed tendencies associated with happiness. However, those exposed to fear-induced sweat showed characteristics of terror.

When sitting in a sauna (桑拿浴室), your body temperature rises, so your body works overtime to cool itself down by sweating. And you’ll be better off for it. A 20-year Finnish study found that people who sweated it out regularly in a sauna had a lower rate of sudden cardiac (心脏的) deaths.

If you sweat heavily during exercise, that’s usually a positive sign. Athletes tend to sweat sooner and more than inactive people. Their bodies have learned to cool down more efficiently during physical activity. A PLOSONE study supports this, showing that long-distance runners not only got sweatier sooner, but also activated more sweat glands, resulting in more sweat than their non-active counterparts.

3 . I grew up on a dairy farm. The particular life location to which I got assigned-“stuck” is a better word if you’ve ever been there — was a small family-owned-and-operated outfit.

I remember the Christmas when our main hired hand dropped out of the work rotation. Sixteen and the oldest of the kids left at home, I was called on to fill in. Halfway through the first day, I realized I had never noticed exactly how much that worker did. For five days I either milked or slept, fed calves (牛犊) or slept. I have to admit this gave me a deep appreciation of how hard my parents worked day in and day out for 30 years, and that understanding solidified my determination to do whatever it took to not stay on that dairy farm my whole life.

Eventually, my determination paid off. I got into college. Now, I no longer have to worry about my father’s voice yelling, “Stace, come out here! We need help!” To be honest, I’m grateful. But at the same time, I also don’t have a compelling reason to be up in time to see the beauty of a sunrise. Nor do I have the opportunity to dance with my sister in the dairy barn, work side-by-side with my dad and hear the old stories.

Now, there are whole stretches of days when I don’t feel any pressing need to even go outside. And I can go months without petting an animal or watching in amazement at their keen sense of the environment around them. Instead, I have neighbors within shouting distance but who feel like they live a planet away.

Eighteen years I lived my life on that dairy, not really knowing there were people who didn’t get up and go out and work together to get the same overwhelming tasks done day after day. Sometimes I wish I had never found out there were.

4 . Self-driving cars may sound like something from a futuristic sci-fi novel. However, with advanced trials expected from 2021, they are a lot closer to reality than you may think, and they could really help you.

Connected and automated vehicles (also known as CAVs), are vehicles that could perform many of the functions of today’s human drivers in the future. Aware of the potential benefits of the technology from improving road safety and reducing traffic congestion (拥塞), to enabling greater travel independence-the U. K. government has been encouraging the technology.

“However, we won’t get there unless those designing the technology engage properly with a wide range of transport users,” said lain Forbes, head of the Centre for Connected and Autonomous Vehicles.

FLOURISH, one initiative that received government backing, has helped to advance the successful implementation of CAVs in the U. K. by developing services and capabilities which maxi-mise the benefits of driverless vehicles for users and transport authorities.

The project was a collaboration between small and medium companies and large businesses across multiple industries, universities, local authorities and the not-for-profit sector, to investigate how these vehicles might benefit older adults and those with mobility-related conditions.

Mervyn Kohler, an Age U. K. spokesman, believes FLOURISH’s approach will be key to the positive impact self-driving cars have on older adults. “The project’s connectivity findings will also help the users of the future to make real-time journey decisions, responding to live information,” Tracey Poole, FLOURISH’s project manager and transport planning specialist says: “Not only will these vehicles be more inclusive; they will also be safer, more efficient and more environmentally friendly.”

Although safety is one of the big prizes associated with the introduction of self-driving cars, with the vast majority of collisions caused by human error, concerns about their safety are common.

The government is keen to understand the public’s view on CAVs and continues to survey public attitudes. It is also taking big steps towards establishing how our laws and regulations might need to change to support the safe use of self-driving cars.

5 . I’m proud to say that I finished my dissertation (学位论文) successfully. But as I reflected on the _________I received from my advisor for my work ethic (职业道德), I believed it was _________ from my dad’s tire shop.

When Dad _________ a small tire shop during my high school years, I began _________ for him despite having no _________ with motor vehicles. I was _________ to learn and work hard, motivated by my _________ to help my dad and make customers think highly of him. The early employees of my dad’s shop were _________ with me, teaching me everything they knew about their trade.

I stayed late, avoided gossiping, and focused on being respectful and curious. The work was _________, physically exhausting, and dirty, but the __________ of honest labor made it all __________. I found meaning in every task that helped the business was, __________, helping my dad.

Years later, my dad retired and sent the business to my elder brother, who has skillfully __________ it. Whenever I return and visit the larger tire shop now, I recall the countless wheels I fixed. More importantly, I remember a sense of __________ that comes with honest labor. I’m __________ for the experience, the lessons learned, and the memories that will stay with me forever.

9 . Anyone who’s used noise-canceling headphones knows that hearing the right noise at the right time can be vital. Someone might want to remove sirens (汽笛) when working indoors, but not when walking along busy streets. Yet people can’t choose what sounds their headphones cancel.

Now, a team led by researchers at the University of Washington (UW) has developed deep-learning algorithms (算法) that let users pick which sounds pass through their headphones in real time. The system, called “semantic hearing”, works with headphones that stream the captured sounds to a connected smartphone which cancels all environmental sounds. Either through voice commands or a smartphone app, headphone wearers can select which sounds they want to include from 20 classes, such as sirens, baby cries, speech and bird chirps. Only the selected sounds will be played through the headphones.

“The challenge posed to today’s noise-canceling headphones is that the sounds headphone wearers hear need to sync (同步) with their visual senses. You can’t hear someone’s voice two seconds after they talk to you,” said senior author Shyam Gollakota, a UW professor. “This means the algorithms must process sounds in under a hundredth of a second.”

That need for speed is why the system must process sounds on a device such as a connected smartphone, instead of on cloud servers. Additionally, because sounds from different directions arrive in people’s ears at different times, the system must preserve these delays and other clues so people can still meaningfully perceive sounds in their environment.

Tested in environments such as offices, streets and parks, the system was able to capture sirens, bird chirps, alarms and other target sounds, while removing all other real-world noise. When 22 participants rated the system’s voice output for the target sound, they said that the quality improved compared to the original recording. In some cases, the system struggled to distinguish between sounds that share many properties, such as vocal music and human speech. The researchers note that training the models on more real-world data can improve these outcomes. In the near future, the researchers plan to release a commercial version of the system.

10 . This happened on March 1, 2020. Just weeks before much of the country issued shelter-in-place orders, a mother and her teen daughter _________ on a near-six-month-mission: to backpack the Appalachian Trail, a 2,000-mile _________ thruway (过境道路) that passes through 14 Eastern states.

When they began, the pair—Briana Sullivan and her daughter Cambyr, who started out 13 but _________ 14 on the journey—had intended to simply disconnect from the “typical world”. It wasn’t _________ a few months into their journey, when the _________ of the pandemic began to reach them in the woods and small towns they passed through, that they realized they were now _________ from the outside, too. They leaned on each other to get through all the _________.

Eventually, the pandemic made it _________ for the pair to shop and find places to sleep._________ they came across what they __________ as ‘trail magic’ and people who were looking out for them, offering them the support hikers needed. Although it may seem __________ to spend the days walking, the Sullivans shared it never felt that way.__________, each day felt different from the next as the two kept themselves busy learning new skills and __________ a stronger relationship with one another.

Throughout their journey, “__________ is everything.” That got them through every day, knowing that “when you feel __________, the only way you can go is up…if you wait long enough, the moments going to change,” Cambyr says.