1945年初秋，第二次世界大战已进入尾声，中国军队、苏联红军和美国军队在亚洲战场上对日本法西斯军队展开了最后的进攻．8月6日和9日，美军飞机先后向日本广岛和长崎投掷了两颗绰号为“胖子”和“小男孩”的原子弹，两座城市瞬间被毁、几天以后，日本天皇宣布无条件投降．原子 In the early autumn of 1945, the Second World War was coming to an end. The Chinese army, the Soviet Red Army and the U.S. armed forces launched the final offensive on the Asian Fascist Army in Asia. On 6 and 9 August, the U.S. military planes dropped two atomic bombs nicknamed “Fat Boy” and “Little Boy” to Hiroshima and Nagasaki in Japan. The two cities were instantly destroyed. A few days later, the Japanese Emperor announced unconditional surrender . atom