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Students walk on the campus of Yale University in New Haven, Connecticut, November 12, 2015. [Photo/Agencies]

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Studying a completely different subject abroad was a new challenge for Yang, who said she would record lectures to review after class to ensure she fully understood them — which included grappling with varying English accents.

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Such efforts are just a sample of China Mobile's push to offer systematic solutions to improve city management. So far, it has already partnered with more than 300 cities in building such pilot projects.

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Subways in Nanjing, Jiangsu province,now have the most 5G service availability in the world, the city's subway operator and the Nanjing branch of China Mobile announced at a news conference on Thursday.

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Such unmanned vehicles are expected to lower the number of human-error incidents at sea, reduce labor costs and cut emissions by using batteries instead of gas.

Such companies used to make low-value products; now, they make high value-added products or offer high-value services.

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Such disruptive technologies are arguably at the frontiers of science, but they are also the subject of public concerns over potentially disruptive effects on society, such as the safety of self-driving vehicles, as well as ethical issues about whether advances in neuroscience could lead to mind reading or manipulation, said Poo Mu-ming, a Chinese-American neuroscientist who is also an academician of the Chinese Academy of Sciences.

Such behavior "interferes with China's internal affairs and negatively affects China-US relations", Geng said.