《时间旅行的科学：揭开神秘博士的时空奥秘》美女高清xx视频

　　Brian takes an audience, with the help of celebrity guests, on a journey into the wonderful universe of The Doctor, in a specially recorded programme from the lecture theatre of the Royal Institution of Great Britain. 　　Brian reveals the science behind the spectacle and explains the physics that allows Doctor Who to travel through space and time. Fun, but filled with real science... (展开全部)