A complaint was received by the president of a major car company:“This is the fourth time I have written to you , and I don't blame you for not answering me because must sound crazy, but it is a fact that we have a tradition in our family of having ice-cream for dessert after dinner each night. Every night after we've eaten, the family votes on which flavor(味道)of ice-cream we should have and I drive down to the store to get it. I recently purchased a new Pantsmobile from your company and since then my trips to the store have created a problem. You see, every time I buy vanilla(香草)ice-cream my car won't start. If I get any other kind of ice-cream, the car starts just fine. I want you to t now I'm serious about this question , no matter how silly it sounds: What is there about a Pantsmobile that makes it not start when I get vanilla ice-cream, and easy to start whenever I get any other kind?'

    The Pantsmobile company president understandably doubted about the letter, but he sent an engineer there anyway. The engineer had arranged to meet the man just after dinner time, so the two got into the car and drove to the grocery store. The man bought vanilla ice-cream that night and sure enough, after they came back to the car it wouldn't start for several minutes. The engineer returned for three more nights. The first night, the man got chocolate. The car started right away. The second night, he got strawberry and again the car started right up. The third night he bought vanilla and the car failed to start.

    There must be a reason why the man's car wouldn't start when he bought vanilla ice-cream. What was it? After doing more research into the case, the engineer eventually found out. The cause. Vanilla ice-cream was the most popular flavor and was on display in a little case near the express check out, while the other flavors were in the back of the store and took more time to choose and check out. This mattered because the man's car was experiencing vapor(蒸汽) lock, which is excess(过度的)heat boiling the fuel in the fuel line and the resulting air bubbles (气泡) blocking the flow of fuel until the car has enough time to cool. When the car was running, there was enough pressure to move the bubbles along, but not when the car was trying to start.

    This year's flu season is pretty scary. To try to minimize the effects, public officials are still urging anyone who hasn't yet gotten their flu shot to get one as soon as possible. However, even if every single person got a shot in the arm, the vaccine(疫 苗)—with its excellent 36 percent effectiveness—would not prevent everyone from getting infected with the annoying virus. Knowledge is power, so here's what goes on in your body when you come down with the flu.

    The influenza virus primarily attacks your nose, throat, and the tubes that lead to your lungs. But the flu is so much more than that. Your muscles ache, your head hurts, and your appetite goes down, among other things. To our surprise, almost all of these symptoms have less to do with the virus itself than with your immune(免疫的)response to them. Unfortunately, the very defense you have in place to get rid of the flu is the reason you feel so painful when you recover.

    The virus usually enters through your mouth, typically by way of your hands. But it takes a few days for symptoms to set in. While this process might cause some harm to your nose and throat, it's nothing major, and nothing like the symptoms that typically accompany a bad or even mild case of the flu.

    The real fun starts when your immune system begins to fight. Your immune system comes in two parts: the innate system and the adaptive. The innate immune system is essentially an all-purpose tool. As soon as your body senses the presence of any injury or invader, the innate immune system launches into action by producing tiny proteins called cytokines and chemokines. The cytokines reproduce almost immediately and start to attack the virus. This increase in immune cells creates a serious inflammation(炎症) throughout the body. But the worst is still to come.

    Meanwhile, the chemokines work with the adaptive immune system to help create T cells. These cells are a special type of white blood cell that works in a much more specific way: They find the influenza virus, identify what's special about it, and create something unique on their surface that finds and destroys similar invaders.

    Internet slang refers to a variety of slang languages used by different people on the Internet. It is difficult to provide a standardized definition of Internet slang due to the constant changes made to its nature. However, it can be understood to be a type of slang that Internet users have popularized, and in many cases, have coined. Such terms often begin with the purpose of saving keystrokes or to compensate(补偿)for small character limits. Internet slang consists of a number of different ways of speaking, sub-languages, expressions, spelling techniques and idioms that have obtained most of their meaning on the Internet.

    Love it or hate it, there is no escape from Internet slang. It has become popular among the teenagers. Just like US teenagers use “LOL”(laugh out loud) when commenting on a funny video, China's post-00s generation, a group born between 2000 and 2009, like to use “XSWL” (laughing my head off). Acronyms(首字母缩略词) and shortened expressions may be popular as they offer shorter ways of communicating. For teenagers, they could also allow them to communicate in their own way.

    Understanding the most common acronyms and texting symbols can help to decode and decipher any text message, email or instant message online. Here are some of the most popular symbols, abbreviations, and acronyms you are likely to stumble upon when texting or receiving messages and chatting on line. OMG: Oh my God; BRT: Be right there; TTYL: Talk to you later; JK: Just kidding; G2G: Got to go; NMU: Not much, you? RBAY: Right back at you; IDC: I don't care.

    Some people think that Internet slang affects the language negatively. However, Melbourne University linguist Rosey Billington doesn't agree.

    “When you are able to use language in a creative way, you show you are linguistically knowledgeable because you know the language rules well enough to use words in a different way.”Billington told News.com. Au .Her view is supported by two linguists, Lauren Spradlin and Taylor Jones.

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    It was the night before my election. I was running for Sophomore Vice President.

    I had prepared a performance for the election--a funny boxing match. The fight had popular moves as seen in Dodge Ball, Iron Man, and Super Smash Brothers. In the end, I would perform my famous move, the Power-Punch from Hot Rod.

    My friend Cheyenne and I rehearsed (排练) the fight for hours, but the fight would not be a fight without music and sound effects. This is where my brother came in. He stayed up all night to work on that soundtrack. And when my computer's disk burner (刻录机) went out at 6 in the morning, he spent a college student's week's worth of incomes to replace it.

    Why would he go into all that trouble? Because he knew that out of all the other important things he could be doing, this was imperative to me. He knew because it was once important to him. Having graduated from Layton High just a year earlier, he knew what it was like to be in the center of people's attention. He knew how fun high school could be, and he wanted me to have a great experience.

    I ended up losing the election, but that day changed my world forever. The lesson my brother taught me became my most important belief. But it wasn't until I had a similar opportunity that I really understood why he cared so much.

    What did it take for me to understand? It was the performance. The rest of the cast and I would rehearse every day after school for 6 months all for what? The chance to perform a play eight times. As I came out on that stage for the first time and listened to the laughter, I was filled with joy. By the end of the play, the audience broke into tears, and so did we. What happened? We had the sweet opportunity of giving them an unforgettable theatre moment -- a moment to laugh, reflect, and shed tears.

What do you do with your old clothes? You might throw them away, or if you want to be more environmentally friendly, you could sell or donate them. No matter what you choose, it's always been your responsibility to deal with them. However, a new California law could shift this responsibility to clothing producers.

This pioneering law, called the Responsible Textile Recovery Act, is targeted to set requirements for producers of clothing, towels and bedding. It requires them to develop and fund a statewide program for reusing, repairing and recycling their products. The law could help address the long-standing pollution caused by the textile (纺织) and fashion industries, noted The Guardian.

Since 1960, the amount of textile waste in the US has grown nearly tenfold, reaching over 17 million tons in 2018, according to the US Environmental Protection Agency. A shocking 85 percent of textiles end up in landfills where they send out harmful gases and chemicals into the environment. As a major polluter, the fashion industry accounts for about 10 percent of global carbon emissions (排放), more than international flights and shipping combined, according to the United Nations. The rise of "fast fashion", which produces cheap, low-quality clothing meant to be worn only a few times, has significantly worsened this environmental crisis.

The serious pollution drove Democratic state senator Josh Newman, who drafted (起草) the Responsible Textile Recovery Act, into action. He communicated with all sectors of the textile industry to prevent opposition.

Some worry the law could make shopping more expensive and impact small and medium-sized brands. However, Newman said people shouldn't notice any price increases, estimating it would cost producers less than 10 cents (0.7 yuan) per item.

The program is expected to begin as early as 2028 in the hope of making the industry more sustainable (可持续的). It could also open new opportunities for green production and consumption while creating more than 1,000 green jobs.