그녀가 죽었을때의 나이를 알아볼려면 이런 치아를 형성하려면 얼마만큼의 시간이 흘러야 하는지 측정합니다 그러므로 이 아이는 3살때 죽었습니다 330만년 전에요
And to know how old she was when she died, what you do is you do an informed estimate, and you say, how much time would be required So, this girl died when she was about three, 3.3 million years ago.