Can’看 Big Bang Theory 学英语 第一季 1集：Pilotpilot：美国电视剧新剧开播都会有一个试播来测试观众对新剧的接受程度，以此来决定是否再继续播下去，也可以说是一个开端，第一集，试播-Sheldon:So if a photon (particle of light) is directed to a plane with two slits in it and either slit is observed, it will not go through both slits.If it's unobserved, it will. However, if it's observed after it's l
有歌词，要不？Our whole universe was in a hot dense state,宇宙一度又烫又稠密Then nearly fourteen billion years ago expansion started. Wait...140亿年前终于爆了炸 等着瞧...The Earth began to
