This sentence not only expresses the helplessness of repeated epidemics, but also regrets that time flies and expresses the melancholy of youth. Youth is really fast, especially for college students. Unconsciously, since 18 years old, I walked into the campus for the first time, and now I may graduate.
Novel coronavirus (coronavirus pneumonia-19), abbreviated as COVID-19, was named as 20 19 coronavirus disease by the World Health Organization, which refers to pneumonia caused by novel coronavirus infection in 20 19. Since 20 19 and 12, many cases of unexplained pneumonia with a history of exposure to the seafood market in South China have been found in some hospitals in Wuhan, Hubei Province, and were diagnosed as acute respiratory infectious diseases caused by novel coronavirus infection in 20 19.