Ourwholeuniversewasinahotdensestate,宇宙一度又烫又稠密Thennearlyfourteenbillionyearsagoexpansionstarted.Wait...140亿年前终于爆了炸等着瞧...TheEarthbegantocool,地球开始降温Theautotrophsbegantodrool,自养生物来起哄Neanderthalsdevelopedtools,穴居人发明工具Webuiltawall(webuiltthepyramids),我们建长城（我们建金字塔）Math,science,history,unravelingthemysteries,数学自然科学历史揭开神秘Thatallstartedwith...
Ourwholeuniversewasinahotdensestate,宇宙一度又烫又稠密Thennearlyfourteenbillionyearsagoexpansionstarted.Wait...140亿年前终于爆了炸等着瞧...TheEarthbegantocool,地球开始降温Theautotrophsbegantodrool,自养生物来起哄Neanderthalsdevelopedtools,穴居人发明工具Webuiltawall(webuiltthepyramids),我们建长城（我们建金字塔）Math,science,history,unravelingthemysteries,数学自然科学历史揭开神秘Thatallstartedwith...
