RT: Maybe states and localities can use some of their CARES money to put air filters in classrooms
COVID is bad but wait until you hear how air pollutions affects education attainment! https://twitter.com/vitalikbut...
RT：也许州和地方可以用他们的资金在教室里安装空气过滤器
新冠肺炎是不好的，但等你听到空气污染如何影响教育程度吧！https://twitter.com/vitalikbut...