A return to campus for the new academic year has colleges and universities struggling to both contain outbreaks of Covid-19 and enforce policies meant to prevent its spread.
원문출처 : https://www.cnn.com/2020/08/30/health/us-coronavirus-sunday/index.html
원문출처 : https://www.cnn.com/2020/08/30/health/us-coronavirus-sunday/index.html