That sent radiation into the air and led to the evacuation of more than 100,000 people from the area.

由此导致放射物进入空气，当地10万多人撤离。

Now scientists want your help to track this radiation from space in a massive citizen science project—by using your smartphone.

现在，科希望你使用一款大众科技产品——智能手机，来帮助他追踪这些来自太空的放射物。

However, most of the fallout affected the villages and cities close to the power plant.

但是，大多数放射性沉降物影响的是临近核电站的村庄。

Over the years, scientists have analysed these meteorites and determined their age through radioactive dating.

近年来，科分析了这些外来物通过放射性同位素衰减测其年龄。

There are nine types of dangerous goods, like flammable, explosives, toxics, erosive, radioactive.

危险品有九种类型， 如易燃物、爆炸物、有毒物、腐蚀性、放射性物。

Moderate  to high winds can spread radioactive fallout across hundreds of square kilometers.

中到强风可以将放射性沉降物散布到数百平方公里的范围内。

Meanwhile, radioactive fallout spreads across  the Northeastern United States, causing another wave of hospitalizations.

与此同时， 放射性沉降物蔓延到美国东北部，引发另一波住院治疗。

However, other devices such as a cobalt bomb can be detonated high up in the air and produce tremendous amounts of radioactive fallout.

然而，钴炸弹等其他装置可以在高空引爆并产生大量放射性沉降物。

While an American study failed to come up with any radioactive fallout that would have been produced by such an explosion, an Australian study did.

美国的一项研究没有发现这样的爆炸会产生任何放射性沉降物，但澳大利亚的一项研究发现了。

Inside to this day are sealed two hundred tons of radioactive corium, 30 tons of highly contaminated dust, and 16 tons of uranium and plutonium.

时至今日，里面还封存着 200 吨放射性堆芯熔化物，30 吨高污染粉尘，以及 16 吨铀钚。

Even if you just detonated one, the radioactive fallout would be an additional severe problem that would get carried by the trade winds and cause horrible environmental damage.

即使你只引爆了一个，放射性沉降物也会是一个额外的严重问题，它会被信风携带，造成可怕的环境破坏。