Good afternoon, and welcome to England. We hope that your visit here will be a pleasant one. Today, I would draw your attention to a few of our laws.

    The first one is drinking. Now, you may not buy wine in this country if you are under 18 years of age, nor may your friends buy it for you.

    Secondly, noise. Enjoy yourselves by all means, but please don't make unnecessary noise, particularly, at night. We ask you to respect other people who may wish to be quiet.

    Thirdly, crossing the road. Be careful, the traffic moves on the left side of the road in this country. Use pedestrian crossing(人行横道) and don't take any chance when crossing the road.

    My next point is about rubbish. It isn't lawful to drop rubbish in the street. When you have something to throw away, please put it in your pocket and take it home, or put it in a dustbin.

    Finally, as regards smoking, it is against law to buy cigarettes or tobacco if you are under 16 years of age.

    I'd like to finish by saying that if you require any sort of help or assistance, you should contact the police, who will be pleased to help you. You can call, write or directly go to any policeman.

     My husband and I had been married nearly twenty-two years when I acquired Stevens-Johnson syndrome, a disorder where my immune（免疫的）system responded to a virus by producing painful blisters. Although my long-term evaluation was good, I, who had been so fiercely independent, rapidly became absolutely helpless.

My husband, Scott, stepped up to the plate, taking care of kids and cooking dinners. He also became my personal caretaker, applying the medicine to all of my blisters because my hands couldn't do the job. Needless to say, I had negative emotions, bouncing from embarrassment to shame caused by total reliance on someone other than myself.

I recovered from my illness, but I couldn't seem to recover from the thought that I loved my husband less than he loved me. This seeming distinction in our love continued to annoy me for the year following my illness.

Then recently Scott and I went on a long bike ride. He's an experienced cyclist; I'm quite the green hand. At one point with a strong headwind and sharp pain building in my tired legs, I really thought I couldn't go any further. Seeing me struggle, Scott pulled in front of me and yelled over his shoulder, “Stay close behind me.” As I followed his steps, I discovered that my legs quit burning and I was able to catch my breath. My husband was pulling me along-again.

     I pray my husband will always be strong and healthy. But if he should ever become the struggling one, whether on a bike ride or with an illness, I trust Ill be ready to call out to him, Stay close behind me--my turn to pull you along.

    A Chinese consortium（联盟）led by China Railway Corp will participate in bidding for a high-speed railroad linking Singapore and Malaysia in 2018, marking another step in China's ambitious strategy to export its high-speed railway technologies to Southeast Asia.

    The consortium, consisting of eight companies including CRRC, China Railway Construction Corporation Ltd, China Railway Signal and Communication Co and Export-Import Bank of China, covers the design, construction, telecommunication, financing, operating and maintenance（维护）sectors for the high-speed rail network.

    A joint tender（招标）for the Kuala Lumpur-Singapore high-speed rail project was issued by the Malaysian and Singaporean government-owned utilities（公用事业）—MyHSR Corp and SG HSR，on Dec 20.According to a joint statement released by the two companies, the potential bidder would be responsible for the design, construction, financing, operating and maintenance of rolling stock and railway systems for the double-track line with a designed speed of 350 kilometers per hour.

    The tender is open to all companies, regardless of their location. A tender briefing will be held in Kuala Lumpur on Jan 23, and proposals need to be submitted by June 29. Submissions will be evaluated based on technical merit（优点）, commercial robustness, financial sustainability and price. The preferred bidder will be selected by the end of next year. The governments of both countries signed a bilateral（双边的）agreement late in 2016 to begin the project. According to the agreement, the high-speed rail link is expected to become operational by Dec 31, 2026, and will cut travel time between Kuala Lumpur and Singapore to just 90 minutes.

    “The move indicates that China's State-owned enterprises have stopped cruel competition to hurt each other,” said Du Chunbu, a professor of rail transportation at Beijing Jiaotong University. “Instead, they have started to form a consortium to better compete with companies from Japan, South Korea, Germany and Canada by bringing their specialties into play.”

    Like many other people who speak more than one language, I often have the sense that I'm a slightly different person in each of my languages­more confident in English, more relaxed in French, more emotional in Czech. Is it possible that, along with these differences, my moral compass (指南针) also points in somewhat different directions depending on the language I'm using at the time?

    Psychologists who study moral judgments have become very interested in this question. The findings of several recent studies suggest that when people are faced with moral dilemmas (困境), they do indeed respond differently when considering them in a foreign language than when using their native tongue.

    In a 2014 paper led by Albert Costa  volunteers were presented with a moral dilemma known as the "trolley problem": imagine that a runaway trolley is moving quickly toward a group of five people standing on the tracks, unable to move. You are next to a switch that can move the trolley to a different set of tracks, therefore sparing the five people, but resulting in the death of one who is standing on the side tracks. Do you pull the switch?

    Most people agree that they would. But what if the only way to stop the trolley is by pushing a large stranger off a footbridge into its path? People tend to be very hesitant to say they would do this, even though in both situations, one person is sacrificed to save five. But Costa and his colleagues found that presenting the dilemma in a language that volunteers had learned as a foreign tongue dramatically increased their stated willingness to push the sacrificial person off the footbridge, from fewer than 20% of respondents working in their native language to about 50% of those using the foreign one.

    Why does it matter whether we judge morality in our native language or a foreign one? According to one explanation, such judgments involve two separate and competing ways of thinking­one of these, a quick, natural "feeling," and the other, careful deliberation about the greatest good for the greatest number. When we use a foreign language, we unconsciously sink into the more careful way simply because the effort of operating in our non-native language signals our cognitive (认知的) system to prepare for difficult activity.

    An alternative explanation is that differences arise between native and foreign tongues because our childhood languages are filled with greater emotions than are those learned in more academic settings. As a result, moral judgments made in a foreign language are less filled with the emotional reactions that surface when we use a language learned in childhood.

    There's strong evidence that memory connects a language with the experiences and interactions through which that language was learned. For example, people who are bilingual (双语的) are more likely to recall an experience if reminded in the language in which that event occurred. Our childhood languages, learned in the middle of passionate emotion, become filled with deep feeling. By comparison, languages acquired late in life, especially if they are learned through limited interactions in the classroom or dully delivered over computer screens and headphones, enter our minds lacking the emotionality that is present for their native speakers.

    A study published in the journal Science reveals that since 1970, bird populations in the United States and Canada have declined by 29 percent, or almost 3 billion birds. The results show tremendous losses across diverse groups of birds and habitats - from iconic songsters such as meadowlarks to long-distance migrants such as swallows.

    "These data are consistent with what we're seeing elsewhere," said coauthor Peter Marra, former head of the Smithsonian Migratory Bird Center. It's urgent to address ongoing threats, both because the domino effects (多米诺效应)can lead to the decay of ecosystems that humans depend on for our own health and livelihoods and because people all over the world cherish birds in their own right. Can you imagine a world without birdsong?"

    Evidence for the declines emerged from detection of migratory birds in the air from 143 NEXRAD weather radar stations across the continent in a period spanning over 10 years as well as from nearly 50 years of data collected through multiple monitoring efforts on the ground. Citizen-science participants also contributed a lot, for the analysis included citizen-science data from the North American Breeding Bird Survey coordinated by the Canadian Wildlife Service- the main sources of long-term, large-scale population data for North American birds.

    The study noted that the largest factor driving these declines is likely the widespread loss and degradation of habitat, especially due to agricultural intensification and urbanization. Other studies have documented death from predation (捕食)by domestic cats; collisions with glass, buildings, and other structures; and pervasive (普遍的)use of pesticides associated with widespread declines in insects, an essential food source for birds. Climate change is expected to compound these challenges by altering habitats and threatening plant communities that birds need to survive.

    "It's a wake-up call that we've lost more than a quarter of our birds in the U.S. and Canada," said coauthor Adam Smith from Environment and Climate Change Canada. But the crisis reaches far beyond our individual borders. Many of the birds that breed in Canadian backyards migrate through or spend the winter in the U.S. and places farther south - from Mexico and the Caribbean to Central and South America. What our birds need now is an historic, hemispheric effort that unites people and organizations with one common goal: bringing our birds back.

Advances in generative artificial intelligence (AI) have enabled authentic-sounding speech synthesis (语音合成) to the point that a person can no longer distinguish whether they are talking to another human or a deepfake (深度伪造). If a person's own voice is "cloned" by a third party without their agreement, bad guys can use it to send any message they want.

Computer scientist and engineer Ning Zhang has developed a new method to prevent unauthorized speech synthesis before it takes place: a tool called AntiFake.

Traditional deepfake detection methods only work after the damage is done. However, AntiFake prevents voice data from being synthesized into an audio deepfake beforehand. This tool turns the tables on cybercriminals (网络罪犯) by using similar voice cloning techniques they employ, but for voice protection. The software complicates voice data extraction and feature identification crucial for voice synthesis. "We're using an opposite AI technique originally used by cybercriminals, but now we're using it against them," Zhang explained. "We slightly change the recorded audio, just enough to make it unusable for voice clone training while still sounding natural to humans."

Ben Zhao, a professor of computer science at University of Chicago, says that the software, like all digital security systems, will never provide complete protection. But, he adds that it can raise the bar and limit the attack to a smaller group of individuals with significant resources.

AntiFake can already protect shorter voice recordings against cloning. The creators of the tool believe that it could be extended to protect larger audio documents or music from misuse. But the methods and tools that are developed must be continuously adapted because cybercriminals will learn and grow with them.