Under the new corona epidemic, the installation of fresh air systems / machines on campus in various regions has gradually become a “new proposition” -Sina.com

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1. Under the new corona epidemic, the installation of fresh air systems / machines on campus in various regions has gradually become a “new proposition” Sina.com
2. US Sets Record Over 1 Million COVID-19 Tests Per Day VOA Mandarin
3. Scientists discover revolutionary drugs that can completely neutralize the new coronavirus: scientific exploration cnBeta
4. US media: how China defeated the new coronavirus Sina.com
5. The European epidemic sounds the alarm! 300,000 new diagnoses in a week, Great Britain, France and Germany economic losses hundreds of billions of euros CFC NEWS
6. See the full report on Google News