I am a writer．I spenda great deal of my time thinking about the power of language—the way it canevoke(唤起)an emotion, a visual image, a complex idea, or a simple truth．Languageis the tool of my trade．And I use them all—all the Englishes Igrew up with．

Born into a Chinese family that hadrecently arrived in California, I've been giving more thought to the kind ofEnglish my mother speaks．Like others, I have described it topeople as "broken" English．But I feel embarrassed to say that．It hasalways bothered me that I can think of no way to describe it other than"broken", as if it were damaged and needed to be fixed, as if it lacked acertain wholeness．I'veheard other terms used, "limited English," for example．Butthey seem just as bad, as if everything is limited, including people'sperceptions(认识)ofthe limited English speaker．

I know this for a fact, because when Iwas growing up, my mother's "limited" English limited my perception of her．I wasashamed of her English．Ibelieved that her English reflected the quality of what she had to say．Thatis, because she expressed them imperfectly her thoughts were imperfect．And Ihad plenty of evidence to support me: the fact that people in departmentstores, at banks, and at restaurants did not take her seriously, did not giveher good service, pretended not to understand her, or even acted as if they didnot hear her．

I started writing fiction in 1985．And forreasons I won't get into today, I began to write stories using all theEnglishes I grew up with: the English she used with me, which for lack of abetter term might be described as "broken", and what I imagine to be hertranslation of her Chinese, her internal(内在的) language, and for that I sought topreserve the essence, but neither an English nor a Chinese structure．Iwanted to catch what language ability tests can never show: her intention, herfeelings, the rhythms of her speech and the nature of her thoughts．

    You need some bread and milk. But half an hour later, you leave the supermarket with a trolley（推车）full of food. What games do supermarkets play to make us spend so much money?

    The tricks usually start before you walk in. Outside the supermarket entrance, anybody who walks past can smell warm, fresh bread. That makes us hungry and ready to buy lots of food, not just bread.

    Now you're inside and, of course, a small basket would be fine, but all they have are trolleys. And of course the problem with a trolley is that it looks sad and lonely with just one or two goods inside. So we may fill it with something. In fact, supermarket trolleys are actually getting bigger so that we buy more.

    Of course, many people shop in supermarkets because they think everything is cheaper than in other shops. So supermarkets offer very cheap prices on some things but then have higher prices for other goods. One new trick is to put red stickers（标签）on them. Customers usually connect red stickers with lower prices so the red stickers is easy to be seen, even when there is no reduction! Interestingly, this trick appears to work more with men than with women.

    There is a story behind the position of everything in the supermarket. The most expensive goods are usually at eye-level so you see these immediately. The exception is anything that children might like. These goods are on lower shelves so that kids see them.

    Apart from what you see and smell in a supermarket, what about what you listen to? In most supermarkets they have soft, slow music. It's so relaxing that you slow down and spend more time (and money) in the store. Experts suggest it's better to shop when it's quieter, on a Monday or a Tuesday for example. And be careful with queues at the checkouts（收银台）. These are sometimes on purpose, to make you buy something from the checkout shelves while you wait.

    So, next time you go into your local supermarket, remember these tricks and see if you can come with just the things you went for.

    Being physically active three times a week reduces the odds of being depressed by about 16%, according to new UCL research carried out as part of the Public Health Research Centre.

    The study, published in JAMA Psychiatry, found a two-way relationship between depression and physical activity. People who increased their weekly activity were reported to have fewer depressive symptoms but those with more depressive symptoms were less active, particularly at younger ages.

    Researchers followed 11,135 people born in 1958 up until the age of 50, recording depressive symptoms and levels of physical activity at regular intervals in adulthood. They found that each additional activity period per week reduced odds of depression by 6%. In England 19% of men and 26% of women are currently classed as "inactive", and this study suggests that activity could significantly improve their mental as well as physical health.

    "Assuming the association is causal, physical activity has a protective effect against depression. If an adult between his twenties and forties who isn't physically active became active 3 times per week, he would reduce his risks of depression by about 16%," said Dr Snehal of the UCL Institute of Child Health, lead author of the study.

    Professor Mark，Director of the Public Health Research Centre, said: "Many people are already aware of the benefits of physical activity on their general health, but now we are seeing more evidence that suggests it also has a positive effect on a person's mental well-being. The latest research highlights just how important it is to ensure that people are working and living in environments that allow them to be both physically active and mentally healthy."

    Sharon, Aged 22

    The most important thing to keep in mind when going into high school is to be yourself. Besides, I don't know what your middle school was like, but high school teachers will not care about things such as how much homework you already have in one night. It's best to just learn to deal with things and manage your time wisely so you can achieve everything you need to

    Frank, Aged 21

    I think almost every kid feels both nervous and excited before their first day. You will probably love it. I know I did. You should join some sports or activities that will make your high school experience more enjoyable. Good luck!

    Eddie, Aged 20

    When I started high school I was really nervous too, especially since I had been homeschooled all through middle school and didn't really know anyone. I suppose the best advice would be to just relax. The first couple of days can be a little bit hard, but things will become easier before you know it.

    David, Aged 19

    I'm not going to lie. The first day is kind of frightening (令人恐惧的). But you'll get used to it. Don't be afraid of anyone. Upperclassmen will pick on you more if you let them know you're afraid. Just take it easy. Making some friends and staying with them will greatly help you get used to high school quickly. After the first week it's really not bad at all. Don't worry.

    A new algorithm(演算法)raises parking rates in busy neighborhoods and lowers them elsewhere, guaranteeing free parking spots regardless of location, Christopher Intagliata reports.

    If you drive in a city, you've no doubt experienced the headache of circling block after block, cruising for parking. But scientists who study that phenomenon have a solution to free up more spots: “You make them more expensive, so people have to decide whether to park farther away and Pay less, or closer and pay more.”Itzhak Benenson, a system scientist at Tel Aviv University.

    San Francisco has piloted a program that raises parking rates based on demand—and it's been shown to reduce cruising. But the sensors required for those systems can cost millions of dollars to install and operate, Benenson says. So instead, writing in IEEE Intelligent Transportation Systems Magazine, he and his colleague Nir Fulman describe an algorithm that can determine smart pricing, without the use of sensors.

    They tested it on the Israeli city of Bat Yam, near Tel Aviv. First, they divide the city into zones. They estimate the parking demand in each zone, by calculating the number of apartments and offices there. Then they take account of parking supply in the area, along with how wealthy potential parkers might be. Using that data, the algorithm suggested pricing for each zone that would guarantee a 90-percent occupancy rate of parking spots city-wide. Meaning 10 percent of spots were always available to drivers willing to pay the price, regardless of neighborhood.

    Of course, not everyone will agree that raising parking prices will reduce the press of parking. Last time Benenson proposed hiking rates for city residents? “I got about 100 reactions on the web and 99 of them that said they have never heard such a stupid statement from the professors, and I should be punished and fired.”

    Eventually, he says, it'll be up to cities themselves to estimate their residents'political appetites for an easier parking spot.

    Believe it or not, we all have an inner-child living inside of us. One of the greatest problems is people's desire to silence the inner-child. Instead, welcoming this voice to the conversation can be very beneficial and help you in many areas of your life.

    Why is it so important to listen to your inner child?

    Do you remember you wanted to be an adult more than anything else when you were young? But now you're an adult, and do you ever find yourself thinking, "I wish I were a kid again?" That's where your inner-child comes in. That's the voice inside of you telling you to have fun, be silly and let loose. Adult life is full of important responsibilities, but once in a while you just have to let go and have fun like a child. It's healthy and good for the soul to not take things so seriously all the time.

    We can tell bad choices and mistakes of the past, but unless you help your inner-child heal and recover, planning for the future will always be difficult. The inner-child will relive these painful experiences until you learn to accept them, forgive and let go. We must show love and acceptance to our inner-child, as this is the only way to heal, move on and not continue to suffer from the pain of these unpleasant times. This is the opportunity to go back in time and let you know just how wonderful, beautiful and special you truly are.

    One of the most common times your inner-child is likely to appear is when you're facing a decision you are unsure about. Naturally, when we were children, doubt and uncertainty scared many of us. So, it's no surprise that when faced with these moments as adults, the inner-child decides to show up. Don't let this scare you; instead, listen to that voice as it is trying to guide you in the decision-making process. Ask it questions, speak with it.

    When you can start to see your inner-child as your partner who helps guide you through this crazy life, it's amazing what can happen. Don't fight it. Go with it and see how it changes your life for the better.