Hellow guys, Welcome to my website, and you are watching [사이언스 취재파일] 델타 변이, 전 세계 대유행 주도…국내도 비상 / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 투데이 at 2021-07-15T02:15:13-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
