“一句话”英语新闻 COVID-19 VACCINE

Today we are going to talk about the vaccine developed by Pfizer and BioNTech. 每天只需要1分钟，听英语新闻，了解国际国内大事，更重要的是还能转化成自己的知识，小伙伴们一定要坚持看完视频哦！