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As COVID-19 cases continued increasing, US President Donald Trump floated an idea on Saturday of putting in place an "enforceable quarantine" on travel for some of the hardest-hit areas.
As PV costs have been relatively high, PV power generation can hardly compete with conventional technologies. Subsidies are usually necessary at the beginning of a new sector. As PV is on its way to fully commercial technology, the costs for PV continue to fall as well as the need for subsidies.
Artist Robert McCurdy; Kim Sajet, director of the Smithsonian National Portrait Gallery; Amazon CEO Jeff Bezos; and his son Preston Bezos pose in front of Bezos’ new portrait at Smithsonian’s National Portrait Gallery. (Photo courtesy of Paul Morigi/AP for National Portrait Gallery)
Arrivals and departures of commercial flights in the first 11 months grew by 19.0 percent year-on-year to 67,056 trips.
As China has become the world's second-largest aviation market, limited capacity has become a major bottleneck for many domestic airports, which are rushing to better tap their physical and digital resources.
来源：资阳报