1945年8月6日早上8时16分,美国B-29轰炸机向日本投下了人类战争史上的第一颗原子弹。一个中心温度达到摄氏5000度的火球在日本广岛市相生桥上扩展开来,8万生灵在这火球出现的最初几秒内化为蒸汽直飞迷蒙的天空。随着这一声石破天惊的巨响, “原子弹”这个可怕的名词传遍了全世界。在第二次世界大战中,纳粹德国也曾致力于研制原子武器。 At 816 a.m. on August 6, 1945, the U.S. B-29 bomber dropped Japan’s first atomic bomb in the history of human war. A fireball with a center temperature of 5,000 degrees Celsius spreads over the Hiroshima Bridge in Hiroshima, Japan, where 80,000 creatures are turned into steamy, skyshot skies in the first few seconds of this fireball. With the horrifying noise of this rock, the terrible term “atomic bomb” spread all over the world. In World War II, Nazi Germany also devoted itself to the development of atomic weapons.