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wow its very nice wonderful there hyeong nim keep sharing watched
![[Full] 취미는 과학 - 2화 시간, 왜 되돌릴 수 없나?ㅣ아무도 본 적 없는 시간, ''시간이란 대체 뭘까?'' #취미는과학 #과학시리즈](http://i.ytimg.com/vi/wU--m7eXN4s/mqdefault.jpg)
![[Full] 취미는 과학 - 2화 시간, 왜 되돌릴 수 없나?ㅣ아무도 본 적 없는 시간, ''시간이란 대체 뭘까?'' #취미는과학 #과학시리즈](/img/tr.png)
wow its very nice wonderful there hyeong nim keep sharing watched