Do you drink water that's been left sitting out overnight or even for another day? Have you noticed it tastes different?

    Tap water that has been left to sit out slowly begins to acquire(获得) off taste. Many people think that this is because of microorganisms. But that's not what makes old water taste not fresh. For that we can thank carbon dioxide. After about 12 hours, tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its pH and giving it an off taste. But it's most likely safe to drink.

    However, back to those microorganisms. If you use a dirty glass day after day, there is more of a chance of bacteria making themselves known; a risk that increases if you share the glass with another mouth as well. But assuming(假设) you use a fresh glass every few days, you probably won't have a problem unless the glass has been touched by dirty fingers, and especially if those dirty fingers went unwashed after using the bathroom.

    As for plastic water bottles that have been left out in the sun or in the car, step away from the bottle, warns Dr. Kellogg Schwab, director of the Johns Hopkins University Water Institute. "A chemical called biphenyl-A, or BPA, along with other things used to make plastic can leach(过滤) into your water if the bottle heats up or sits in the sun," he explains. BPA, as you probably know, has been linked to everything from heart disease to cancer. Schwab also adds that plastic used for commercial bottled water isn't meant to be washed or refilled, so use only one time and recycle. Or don't buy them at all; use refillable water bottles instead.

    My friend Jason and I wanted to do something to help other people who are less lucky and help us grow at the same time. After we decided that we would volunteer in Nepal, I did some surveys on the Internet and I found an organization called Volunteer(志愿者) Nepal and felt strongly that it was the right choice for us.

    While making our plans, Jason and I realized that others might like the chance to be a part of our experience. So before leaving for Nepal, we asked the people we know whether they would be interested in donating(捐赠) money or goods to Nepal Orphans Home.

    One friend, whose family owns a shop called Drake Supermarket, told others about it. Many people wanted to donate something. We received donations that filled 29 boxes with sporting goods, toys, coloring books, pencils, children's books, and more, The boxes were later taken to Drake's warehouse(仓库) where I prepared them for shipment. Drake agreed to ship them to Nepal for free .

    The boxes had arrived at the Volunteer House when we arrived there. The next day, Jason and I opened the boxes. The children from the orphanages(孤儿院) stood in a line and were able to choose a gift. This took about an hour, but the looks on their faces and the happiness that we saw in their eyes made it one of the best days of our life.

    We visited the orphanages there in the following days. Being with the children at the orphanages was both sad and wonderful. I'm sure that anyone who has volunteered will understand what I mean by that. My experience as a volunteer was very useful. It has changed me as a person and the way I viewed life in the past.

    The British live on a small island. They are surrounded by the sea, so it is not surprising that the sea has always played an important role in their lives. After the development of large, ocean­going sailing ships in the fifteenth century, the sea became even more important to the country's development. Ships setting sail from England determined to extend Britain's territories, its wealth and its knowledge of the world. Ships returned to England bringing goods, people and new ideas from foreign places. By the nineteenth century, Britain had the largest, most powerful navy in the world.

    The great sailing ships were so much a part of British life that they even affected the language. Many English expressions we use today were originally nautical (航海的) terms, although most people no longer realize this. For example, people commonly describe an honest and fair business deal as being "above board". This expression was originally used in sailing ship times when secretive, dishonest ship's business would be carried out below decks (below the boards) out of public view. On the other hand, honest business was always conducted on deck (above the boards), in the open where everyone could see what was going on.

    "Pipe down!", meaning "Be quiet!", is another common expression that has nautical origins. The ship's boatswain (水手长) would blow a whistle, or pipe, at the end of the day to indicate (表明) to the sailors it was time to quieten down and go to sleep.

    Most native English speakers have heard the expression "not enough room to swing a cat", but few know that the "cat" does not refer to a small furry animal with four legs and a tail. The "cat" is actually a short form of "cat of nine tails" — a whip with nine, knotted (打结的) tails. A boatswain needed a lot of space in order to swing the whip properly when lashing (鞭打) a poor sailor under his control!

    Everything has its root. “Holiday”, is no exception. The origin of “holiday” is easy to see, coming from “holy day”, a day of particular religious significance, often celebrating the life of a saint (圣徒), during which no work was to be done. As far back as the 11th century, “holidays”, especially the major feast days, were times of “celebration and amusement”, as the Oxford English Dictionary puts it.

    The number of holidays steadily increased during the Middle Ages, until a medieval Englishman would have had the luxury of 40 to 50 days a year off work, depending on where he lived, in addition to a free day on Sundays.

    During the Reformation, Henry VIII abolished most of the holidays partly because of the Protestant (新教徒的) suspicion of saints, but more practically, because, according to historian Eamon Duffy, “A large number of holidays were making the people poor by limiting agriculture.” The people took a different view and organized a protest march—the Pilgrimage of Grace—partly to protect their days off.

    Though at first the religious and festive senses of holiday were combined, the word gradually came to be used for any kind of relaxing break from work. As the word was drawing away from a religious society, the number of authorized holidays was reduced, until by 1834 most workers had only four official days off a year, in addition to Sundays. Many factory workers amplified this time by staying home on “Saint Monday” to recover from what they had gotten up to the day before.

    By the late 19th century, employers were compromising and offering half-day Saturdays, the beginning of the “weekend”, a term first used in 1879. In 1908, an innovative mill in New England gave its employees all of Saturday off, and the practice of their getting the whole Saturday off spread widely during the Great Depression as a way to keep employment up. It took 400 years, but finally workers could enjoy as many holidays as they had in the 15th century.

Imagine reading a story titled "Pursuing Success." That would be an inspiring story, wouldn't it? Maybe—but maybe not. It might well be the story of someone whose never-ending chase for more and more success leaves them unsatisfied and incapable of happiness.

Though it isn't a conventional medical addiction, for many people success has addictive properties. Obviously, success goes with praise. To a certain extent, praise stimulates the neurotransmitter dopamine (神经递质多巴胺), which contributes to all addictive behaviors.

The desire for success may be born to human nature, but specialness doesn't come cheap. Success is tough work, and it requires bearing the cost of losing. In the 1980s, the physician Robert Goldman famously found that more than half of ambitious athletes would be willing to take a drug that would kill them in five years in exchange for winning every competition they entered.

Unfortunately, success is endless. The goal can't be satisfied; most people never feel "successful" enough. The high only lasts a day or two, and then it's on to the next goal. Psychologists call this the hedonic treadmill (快乐跑步机现象), in which satisfaction wears off almost immediately and we must run on to the next reward to avoid the feeling of falling behind.

People should get off the treadmill. But quitting isn't easy for addicts. For people hooked on substances, withdrawal can be a painful experience, both physically and psychologically, research finds that depression and anxiety are common among outstanding athletes after their careers end. Olympic athletes, in particular, suffer from the" post-Olympic blues."

Just like wine, success in and of itself is not a bad thing. Both can bring fun and sweetness to life. But both become bossy when they are a substitute for — instead of a complement (补充物)to — the relationships and love that should be at the center of our lives.

I arrived in this beautiful Spanish island at the start of September, full of enthusiasm and eager to start work as an English teacher. I sorted all the necessary paperwork out and moved into a flat of my own within the first couple of days. Great! Or so I thought. At 4 am and at several intervals after that, I was rudely awoken by the cock that lives opposite me. Fantastic! I now have five extra alarms every morning.

In the following weeks, I also started to notice a trend. Things in my flat started to break at the rate of one object per day, like the hot water, bowls, cups, shower, doors or glass shelves. Yes, I was clumsy but things just fell apart. If it wasn't broken, it would either be dirty or missing. Using my washing basket for the first time was pretty disgusting. When I took out my clothes, they were swiftly followed by a hundred or so insects that were living in the bottom.

As for the general lack of equipment in the house, there was no oven, tin opener, sharp knives or potato peeler. It turned out making a burger wasn't the best idea. I had a small microwave and a grill. I thought the general understanding was never to put metal in a microwave but I went with it. Smoke soon started to appear. I was not quite sure if it was the burger or the grill but as soon as I opened the door, the electricity cut out. I spent the following 10 minutes in a dark, smoky room hunting for the power switch using the light from my mobile phone, which broke the week after and left me without a connection to the outer world.

Luckily, I'm now borrowing a phone and my luck has returned. No more things have broken (probably because there is nothing left to break). I've also realized that even if a flat looks pretty, it doesn't mean its contents work. I am also learning how to adapt to life with limited, broken utensils.