《末日倒数 地球大撤退》综艺英语完整版高清全集百度云在线观看/迅雷下载,未删减版西瓜影音播放器在线播放。　　If we faced a countdown to destruction, could we build a spacecraft to take us to new and habitable worlds? Can we Evacuate Earth? NGC's two-hour special examines this terrifying but scientifically plausible scenario by exploring how we could unite to ensure the survival of the human race.