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Following a mysterious disappearance on a jump, a group of skydivers experience paranormal occurrences that leave them fighting for their lives.。一场小镇的世仇，一场互联网阴谋，以及一场针对总统的暗杀未遂。欢迎来到密西西比州，这个令人瞠目结舌的故事从地方戏剧演变成全国性丑闻。。核试验科教记录片。是自人类发明原子弹、氢弹以来的各种核爆炸记录，采访了许多美国参与核试验的专家，非常珍贵的第一手资料。著名的“小男孩”（广岛）和“胖男人”（长崎）就在这里，不可不看！ On July 16, 1945, at a site called Trinity, a plutonium bomb was assembled and brought to the top of a tower. The bomb was detonated, producing an intense flash and a fireball that expanded to 600 meters in two seconds. The explosive power was equivalent to 18.6 kilotons of TNT. It grew ...。