@thereal_truther @joaquinlife (HEPA filters also protect kids from other airborne infections, mold, asbestos, lead dust, air pollution, etc. in often old and not necessarily safe schools. There are very large payoffs to that modest investment.)
@thereal_truther@joaquinlife（高效空气过滤器还可以保护儿童免受其他空气传播感染、霉菌、石棉、铅尘、空气污染等。在通常陈旧且不一定安全的学校。这项适度的投资有很大的回报。）