孕妇毛片

　　1/6. What Is Out There? 　　How we came to understand our planet was not at the centre of everything in the cosmos. 　　第1集：宇宙是什么 　　人类是如何认识到地球不是宇宙的中心的。 　　2/6. What is the World Made of? 　　How atomic theories and concepts of quantum physics underpin modern technology. 　　第2集：世界由什么构成 　　原子理论和量子物理是如何支撑现代技术的。 　　3/6. How Did We Get Here? 　　How scientists came to explain the diversity of life on earth. 　　第3集：... (展开全部)