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"EV owners are also worried about battery degradation caused by V2G. It is not clear if automakers will still provide the same kinds of warranty if the EVs participate in V2G applications."

"Faced with dangerous environments, high work intensity and inadequate welfare, the job is an unappealing choice for most people, which makes it difficult for the current rescue team to meet the increasing demands," he said, adding that more than 20 million domestic ships enter and leave the ports each year, along with more than 500,000 international ships.

"Each of the more than 1,600 Shanghai medics dispatched to Wuhan has his or her own story. What we are doing is piecing together their combined memories to form an image of what the battle against the virus was like," said Fan.

"Facing rising uncertainties and challenges, China and the EU should work together to inject more confidence and certainty into this multilateral world," said Zhao.

"Each of us wants to be healthy, but when someone is in the critical moment of life and death, we have no reason not to lend a helping hand," Li wrote in his diary that day.