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"During a time of record demand for aluminum in the United States, it is critical that companies have access to a steady source of supply. That's why we continue to call for quota-free tariff exemptions for countries like Canada that play by the rules and operate as market economies," Matt Meenan, spokesman for The Aluminum Association, wrote in an email.

"Despite a late start, China has made rapid progress in hydrogen development, mastering core technologies of the hydrogen fuel cell," said Zhang Qingjie, president of Wuhan University of Technology.

"Does this alone not suggest that the process has been abused?" he questioned.

"Every year, we receive over 300,000 outpatients, and half come from far away to Chongqing," Huang said. "I feel so happy that I can help so many families."

"Doing sports provides me with energy, and dopamine gives me a lot of pleasure after I sweat," Jiang said.