冰雪勇士3迅雷下载
9 年前
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影片讲述了空巢老人刘忠实苦苦等待儿子回家的故事。儿子刘晓义长大成人并在城里有了自己的家，忙碌的他却不曾留意家乡的父亲已日渐苍老，如山背影不在，而老人最大的安慰不过是一顿简单的团圆饭。影片意在呼吁社会关注“空巢老人”现象..。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 ...。