Common cold
Overview Related information COVID-19, cold, allergies and the flu: What are the differences? The common cold is a viral infection of your nose and throat (upper respiratory tract). It’s usually…
VOA英语教学网 - VOA LEARNING ENGLISH
一个让你免费在线学习VOA英语的好地方! 无须报名, 不收学费, 全年无休, 保证提高! (^_^)
Overview Related information COVID-19, cold, allergies and the flu: What are the differences? The common cold is a viral infection of your nose and throat (upper respiratory tract). It’s usually…