即将离开知乎

您即将离开知乎，请注意您的账号和财产安全。

https://www.who.int/zh/emergencies/diseases/novel-coronavirus-2019/advice-for-public?gclid=CjwKCAjw9aiIBhA1EiwAJ_GTShS8PFx8HdIVqaxcQpOqWa-OpSsh4kM-hVAX-LIrCAO6exMCfVF6RxoCU_AQAvD_BwE