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Despite their rosy depictions, there are too many uncertainties involved in the process. It starts with a company telling a story, producing a sample car and raising funds, to their production and sales in the market, he said.

Developed by the British engine manufacturer Rolls-Royce, M250 and RR300 engines have powered more than 260 million flight hours around the world. To date, more than 33,000 of these engines have been delivered worldwide, including those serving nearly 80 Chinese customers.

Domestic workers should have more professional training so that they can acquire the skill set needed, said Ma.

Digital marketplace firms also contributed a lot in fighting against the epidemic globally and stabilizing economic growth and the employment, said the report.

Ding said although the concept of nanorobots for medical use had previously been introduced with experiments conducted in test tubes, this is the first time that experiments have been conducted in living organisms within sophisticated and often uncontrollable biological environments.