求翻译：1945年8月6日，美国用B-29超级空中堡垒轰炸机运载“小男孩”2万吨当量原子弹轰炸广岛。爆炸时间：1945年8月6日8点15分43秒，城市中心12平方公里内的建筑物全部被毁，全市房屋毁坏率达70％以上。关于死亡人数，日美双方公布数字相差甚大。据日本官方统计，死亡和失踪人数达71379人，受伤人数近10万。是什么意思？

August 6, 1945, the United States with B-29 Super Fortress bombers carrying air "Little Boy" 2-megaton atomic bombing of Hiroshima. Explosion time: at 8:15:43 on August 6th, 1945, the city center 12 square kilometers of buildings were all destroyed, the city's houses were damaged more than 70%. The

August 6, 1945, the United States used B - 29 flying fortress bombers carrying 20,000 tons equivalent "little boy" atomic bombing of Hiroshima. Explosive time: August 6, 1945 8:15 43 seconds 12 square kilometers, the city center within the city, the buildings were all destroyed housing destroyed mor

On August 6, 1945, US “the young boy” 20,000 ton equivalent atomic bombs bombing Hiroshima with the B-29 superfortress bomber aircraft delivery.Blasting time: On August 6, 1945 8.15 minutes 43 seconds, the urban center 12 square kilometer in buildings are destroyed completely, the whole city house d

On August 6, 1945, the United States with B-29 Super air fortress bombers carrying "little boy" 20,000 kiloton atomic bombing of Hiroshima. Explosion time: August 6, 1945: 43 second, all buildings have been destroyed in the city centre 12 km, the city's housing damage rate of more than 70%. On the d

On August 6, 1945, the United States with B-29 Super air fortress bombers carrying "little boy" 20,000 kiloton atomic bombing of Hiroshima. Explosion time: August 6, 1945: 43 second, all buildings have been destroyed in the city centre 12 km, the city's housing damage rate of more than 70%. On the d