20世纪,人类掌握了核裂变、核聚变快速释放出比化学反应大几千万倍能量的技术,用于制造大规模杀人武器——原子弹,从而揭开了人类灾难史上划时代的一页。1945年8月6日原子弹在日本广岛上空首次公开亮相,3天后又一枚原子弹在长崎上空爆炸,此后已半个多世纪未出现军事上的核攻击。然而核灾难并没有停留在这两天,它不仅在轰炸广岛之前的试爆时已来到人间,而且半个多世纪来时时 In the 20th century, mankind mastered nuclear fission, and nuclear fusion rapidly releases tens of millions of times more energy than chemical reactions to make a weapon of mass destruction - the atomic bomb - thus opening the epoch-breaking page in the history of human disasters. On August 6, 1945, the atomic bomb was first made public in Hiroshima over Japan. Three days later, another atomic bomb exploded over Nagasaki. No military nuclear attack took place for more than half a century thereafter. However, the nuclear disaster did not stop on these two days. It not only came to earth during the test explosion before the bombing of Hiroshima, but more than half a century has passed