2017-01-23 Special EnglishThis is Special English. I&`&m Mark Griffiths in Beijing. Here is the news.Beijing has started to install air purification systems in some of the city&`&s schools and nurseries.The city government has allocated money to help the schools cover the cost of the installation.Beijing suffered heavy air pollution this winter, and schools and other education institutions in the city were ordered to stop outdoor classes and activities.Many regions in China experienced heavy smog recently. The national observatory issued a red alert for fog and renewed an orange alert for smog in a number of northern, eastern and central regions.China has a four-tier color-coded warning system for severe weather, with red being the most serious, followed by orange, yellow and blue.This is Special English.China has called for more efforts to ensure food safety in the country, noting that there are still many problems despite an improving food safety situation.President Xi Jinping said more efforts should be made to ensure food safety for the public. During his latest instructions on China&`&s food safety work, President Xi called for the most rigorous standards and the most stringent regulations for improving food safety control.He stressed administration under the law, enhancement of work at grassroots level and the professionalism of food safety inspectors. He also demanded a comprehensive food safety system from farm to table.You&`&re listening to Special English. I&`&m Mark Griffiths in Beijing.China&`&s unmanned deep sea devices have completed deep sea tests, descending over 10,000 meters into the waters of the Pacific Ocean. Chinese scientists carried out the research at the Challenger Deep in the Mariana Trench, the deepest part of the ocean in the world.The deep sea diving involved a research vessel, a deep sea landing support ship, as well as manned and unmanned submarines capable of diving 10,000 meters underwater.In the experiment, the submarines reached the ocean floor, took pictures and collected sediment and biological samples. The experiment is called the Rainbow Fish project and is funded by the state and private capital.The scientists involved in the tests said the success marks another step forward in China&`&s deep-sea research.Globally, there are 26 trenches that are 6,500 meters or deeper. These trenches are home to a number of newly discovered fauna species, and with abundant energy and mineral resources.In August last year, an unmanned submarine dived to a depth of 10,000 meters at the Mariana Trench, setting a new record in China. China became the third country after the United States and Japan to build submarines capable of reaching depths of more than 10,000 meters.This is Special English.Bar-code technology widely used in supermarkets and industry is to be introduced into Britain&`&s National Health Service. Scanning will be used for the first time on breast implants and replacement hips and other surgical tools used during surgical procedures.The barcodes will also be used to trace patients and their treatments, manage medical supplies and monitor the effectiveness of equipment.The scanning project, at a cost of 12 million pounds, roughly 15 million U.S. dollars, will help medical staff to quickly and easily track each patient through their hospital journey.According to a spokesman for the Department for Health, by using barcodes, anything that might develop a fault years later, for example a screw used in a knee operation or breast implant, can be traced. The details, such as when it was used and the surgeon who carried out the procedure, can also be found quickly and easily.The technology will also help to eliminate avoidable harm in hospitals, including errors such as patients being administered the wrong drugs and surgery being performed on the wrong part of the body.Early results from 6 pilot "