Are these Covid-19 safety precautions part of your child's back-to-school plan?
원문출처 : https://www.cnn.com/videos/health/2021/07/29/back-to-school-covid-precautions-dr-leana-wen-orig-nws.cnn
원문출처 : https://www.cnn.com/videos/health/2021/07/29/back-to-school-covid-precautions-dr-leana-wen-orig-nws.cnn