Dinosaurs died out 65 million years ago and we have hardly ever found a complete skeleton. So how do we turn a pile of broken bones into a dinosaur exhibit? Dr Alice Roberts finds out how the experts put skeletons back together, with muscles, accurate postures, and even - in some cases - the correct skin colour. ----------（From BBC Four Programme Official Website） 《恐龙是怎样炼成的》的观看地址： http://www.wxszxjh.com/sp/60oBzyL64XbG.html由西瓜电影网提供,欢迎转发分享！