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"Getting diagnostics and medical equipment for the coronavirus response is a global challenge. Africa is in a fierce competition with the developed world with respect to the availability of commodities," Nkengasong said.

"For the past four years, China's domestic consumption has become a leading force driving economic growth thanks to government efforts to restructure the economy," Bali said.

"Getting TikTok off Americans' phones can be done easily, since the app store market is a duopoly, Apple and Google. But the legal implications are much more complex," he said.

"From income inequality to climate change, technology will play a critical role in finding solutions to the challenges our world faces today. This year's emerging technologies demonstrate the rapid pace of human innovation and offer a glimpse into what a sustainable, inclusive future will look like," said WEF CTO Jeremy Jurgens, at the 2019 World Economic Forum's Annual Meeting of the New Champions, also known as the Summer Davos Forum.

"Finding out who threw an object is sometimes difficult in reality, although some buildings now have cameras," the lawyer Xu said. "But a joint force from law enforcement departments, such as public security bureaus and community committees, should still be advocated, and people's legal awareness should also be enhanced."