Hellow guys, Welcome to my website, and you are watching [다시보기] 5월 14일 (수) 오전 사이언스 투데이 / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 투데이 at 2025-05-13T21:50:53-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
