00:05:45,150　　想要弄明白为什么　　Trying to figure out why electrons　　115　　00:05:45,160 --> 00:05:46,750　　电子在穿过石墨烯时　　behave as if they have no mass　　116　　00:05:46,760 --> 00:05:48,730　　会表现得像是没有质量一样　　when traveling through a graphene sheet.　　117　　00:05:48,740 --> 00:05:49,980　　用大理石来推测　　With marbles?　　118　　00:05:49,990 --> 00:05:50,810　　我总得找点比豆子大的东西　　Well, I needed something bigger　　119　　00:05:50,820 --> 00:05:52,650　　不是吗　　than peas, now, didn't I?　　120　　00:05:53,830 --> 00:05:56,730　　谢尔顿　　你上次睡觉是什么年代　　Sheldon, when was the last time you got any sleep?　　121　　00:05:56,740 --> 00:05:58,170　　不知道　　大概2　　3天　　I don't know-- two, three days." type="audio/mpeg" />-->