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"Earlier we were reliant on the intuitions and experience of the local operation team. With the use of technology like AI and big data, we are getting more accurate answers."

"E-sports could also encounter problems like doping, because tournaments are so intense and require players to have excellent concentration and physical endurance."

"E-commerce enables Kroger to quickly scale to reach new customers and markets where we don't operate physical stores, starting with China," Kroger Chief Digital Officer Yael Cosset said in a statement. "We anticipate Chinese consumers will love Our Brands — starting with Simple Truth products — just like our American customers do."

"Domestic air passenger travel volume during the holiday was expected to reach 80 percent of last year's level based on advance booking information, but it turned out to have recovered to about 90 percent compared to the same period last year," Li said.

"Even though we cannot meet each other, I can check their attendance, tutor their homework and monitor their examinations online," Yang said.