炸弹的副产品之一的放射性同位素锶-90扩散到空中，降落到地面，被奶牛摄取，然后通过牛奶供应传递出去。
The radioactive isotope Strontium-90, one of the by-products of the bombs, spread into the atmosphere, fell onto the land, was ingested by dairy cows and passed into the milk supply.
炸弹所产生的巨大的原子尘意外地将一艘名为福龙五号(Lucky Dragon No . 5)的日本拖渔船笼罩在强烈的放射性烟尘之下。
The unexpectedly vast fallout from the bomb enveloped a distant Japanese tuna trawler named the Lucky Dragon No. 5 in a blizzard of radioactive ash.
这次爆炸甚至可能会更大：沙皇炸弹原来打算生产1亿吨的爆炸力，但为了减少爆炸时所i产生的放射性沉降物，作了重新设计。
The bang could have been even bigger: Tsar Bomba was originally intended to produce a 100-megaton explosion, but was redesigned to reduce the amount of radioactive fallout created.
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