mountainking2022-01-24 11:57:08

危害非常大,能避免应该尽量避免

现在大规模传染,大家警惕性有所放松,所以很容易出现悲剧 (或者已经出现悲剧)

https://www.cbc.ca/news/health/covid-body-health-issues-1.6323589