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They also have to contend with physical challenges caused by the high altitude. The oxygen level is 40 percent lower than that at sea level, while the average annual temperature is about－7 C. Outsiders usually take a month to get used to the high altitude, but some of the police officers still suffer from insomnia caused by altitude sickness. Oxygen tanks are provided for everyone at the station.

They found that less than 10 percent of protected areas were invaded by alien species, while at least one wild, established population was observed within 10 to 100 km of the boundaries of 89.4 percent of the protected areas.

They are the country's first urban rapid-transit trains to be capable of fully automated driverless operation. Using the system, the train can automatically start, run between stations, accurately stop at a station and open and close its doors, the company said.

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They're organized by MATT－which stands for Mobility, Accessibility, Time and Work－a startup founded last year that aims to create jobs for people with disabilities.

They use the property to operate a gallery and photography studio, to conduct nude photo workshops and exhibitions, and to host random visitors and amateur photographers from around the world.

They also arrested four foreign suspects charged with pandemic-related crimes.

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They will also promote development of the industry with the help of big data, cloud computing, mobile internet and artificial intelligence.

Things have quite visibly changed during the past two years. The political process is moving forward and the security situation has substantially improved. The complex security situation in the region is still a challenge but new openings — Pakistan's entry into the Shanghai Cooperation Organization along with India's is just one recent example — are emerging.

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They said the early detection market would probably become bigger than treatment market as technologies mature, despite various challenges such as overuse.

They visited Unit 731 Museum in Harbin, capital of Heilongjiang province, and mourned the more than 3,000 people tortured and killed there. Unit 731 was the Japanese army's germ warfare division, which engaged in experiments on humans.