Oxford English Dictionary editors recently said that "run" has become the word with the most meanings in English, with more than 645 different usage cases for the verb form alone. This entry(条目), took one professional dictionary writer nine months of research to complete. How could three little letters be responsible   for so many meanings?

    Think about it: When you run a fever, for example, those three letters have a different meaning than when you run a bath to treat it, or when your bathwater runs over and makes your bath runner wet, forcing you to run out to the store and buy a new one. There, you run up a bill of $85 because besides a small carpet and some cold medicine, you also need some thread to fix the run in your stockings and some tissue for your runny nose and a carton of milk because you've run through your supply at home, and all this makes fear run through your soul because your value club membership runs out at the end of the month and you've already run over your budget on last week's grocery run when you ran over a nail and now your car won't even run properly. God—you'd do things differently if you ran the world.

    When the OED's first edition came out in 1928, the longest entry belonged to another three letter word: "set". Today, it has some 200 meanings.

    Why is "run" suddenly the Swiss Army Knife of verbs? According to British author Simon Winchester, "run" has earned some major lift during the Industrial Revolution (工业革命), when new inventions chose it as their verb of choice. "Machines run, clocks run, computers run there are all of those that began in the middle of the 19th century," Winchester says.

    So, ready to run through the whole list of definitions(定义)? You'll have to wait for the next edition of the OED, expected in 2037.

    Nowadays more and more people like to travel, especially when vacations come. A great number of people rush out of their homes or companies to travelling spots. They either drive or take a bus, a train, a ship and so on. Some even ride bikes.

    However, there is another way of travelling—poorism. People have a tour in the poorest areas of the world. Some people may take one-day poorest tour, and some even pay to stay in very poor neighborhoods to experience the lowest living standards in the world. Poorism tours take place around the world, and not just in the third world countries. You can, for instance, tour New York neighborhoods in the Bronx, in the Bund of Shanghai. Such tours can take people into the heart of poor areas within large and in some rich cities. These tours may awaken people to pay more attention to long-standing poverty, or the effects of war.

    Some suggest that tours in the poor areas can raise social care. And the money from the tour can be donated to help the people there.

    At the age of 14, James Harrison had a major chest operation and he required 13 units (3.4 gallons) of blood afterwards. The blood donations saved his life, and he decided that once he turned 18, he would begin donating blood as regularly as he could.

    More than 60 years and almost 1,200 donations later, Harrison, whose blood contains an antibody(抗体) that has saved the lives of 2.4 million babies from miscarriages (流产), retired as a blood donor on May 11. Harrison's blood is valuable because he naturally produces Rh-negative blood, which contains Rh-positive antibodies. His blood has been used to create anti-D in Australia since 1967.

    "Every bottle of anti-D ever made in Australia has James in it," Robyn Barlow, the Rh program director told the Sydney Morning Herald. "It's an amazing thing. He has saved millions of babies. I cry just thinking about it." Since then, Harrison has donated between 500 and 800 milliliters of blood almost every week. He's made 1,162 donations from his right arm and 10 from his left.

    "I'd keep going if they let me," Harrison told the Herald. His doctors said it was time to stop the donations — and they certainly don't take them lightly. They had already extended the age limit for blood donations for him, and they're cutting him off now to protect his health. He made his final donation surrounded by some of the mothers and babies who his blood helped save.

    Harrison's retirement is a blow to the Rh treatment program in Australia. Only 160 donors support the program, and finding new donors has proven to be difficult. But Harrison's retirement from giving blood doesn't mean he's completely out of the game. Scientists are collecting and cataloging his DNA to create a library of antibodies and white blood cells that could be the future of the anti-D program in Australia.

    A voyaging ship was wrecked during a storm at sea and only two of the men aboard were able to swim to a small, desert-like island. Not knowing what else to do, the two survivors agreed that they had no alternative than to pray to God.

    However, to find out whose prayers were more powerful, they agreed to divide the territory between them and stay on opposite sides of the island.

    The first thing they prayed for was food. The next morning, the first man saw a fruit-bearing tree on his side of the island, and he was able to eat its fruit. But the other man's parcel of land remained barren.

    After a week, the first man became lonely and decided to pray for a wife. The next day, another ship was wrecked and the only survivor was a woman who swam to his side of the island. But on the other side of the island, there was nothing.

    Soon thereafter the first man prayed for a house, clothes and more food. The next day, like magic, all of these things were given to him. However, the second man still had nothing.

    Finally, the first man prayed for a ship so that he and his wife could leave the island, and in the morning he found a ship docked at his side of the island.

    The first man boarded the ship with his wife and decided to leave the second man on the island, considering the other man unworthy to receive God's blessings since none of his prayers had been answered.

    As the ship was about to leave, the first man heard a voice from Heaven booming, "Why are you leaving your companion on the island?"

    "My blessings are mine alone since I was the one who prayed for them," the first man answered. "His prayers were all unanswered and so he doesn't deserve anything."

    "You are mistaken!" the voice rebuked him. "He had only one prayer, which I answered. If not for that, you would not have received any of my blessings."

    "Tell me," the first man asked the voice, "what did he pray for that I should owe him anything?"

    "He prayed that all your prayers would be answered."

    For all we know, our blessings are not the fruits of our prayers alone, but those of another praying for us. So what you do for others is more important than what you do for yourself.

    When a leafy plant is under attack, it doesn't sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.

    Scientists have found that all kinds of plants give out VOCs when being attacked. It's a plant's way of crying out. But is anyone listening? Apparently. Because we can watch the neighbors react.

    Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch.

    In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do.

    Does this mean that plants talk to each other? Scientists don't know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to "overhear" the cry. So information was exchanged, but it wasn't a true, intentional back and forth.

    Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate (亲密的) than the world we can see and hear. Our senses are weak. There's a whole lot going on.

    Do you think the United Kingdom and the United States are alike? Winston Churchill once joked that the people of Britain and the people of America are separated only by their language. Do you think that is true? The British and the Americans both speak English as the official language. However, each uses some different words. We Americans are similar to the British. After all, our country was once owned by the UK,so we have a lot in common. But there are many differences between us.

    The UK has a king or queen, and the leader of the government is the Prime Minister. The US has no kings or queens. Our leader is the President.

    Both the British and Americans use pounds and ounces, pints, quarts, and gallons. Both use miles, yards, and feet. Our money is different, though. The British use pounds and pence. Americans use dollars and cents.

    Driving in a car is very different in the UK. They drive on the left side of the road. We drive on the right. What we call the hood of the car, the British call the "bonnet". British cars run on "petrol", which we call gasoline.

    In our everyday life, we do many of the same things as the British. But we describe them differently.

    A young mother here might push a baby in a baby carriage. A British mum pushes a "pram". The British watch "telly", while we watch TV. We like to eat French fries, but the British call them "chips". Millions of Americans drink coffee, but most British prefer tea.

    So we are different in many ways. But we stay friendly anyway.