他们有反应堆安全，然后还有辐射安全，他们还有防护措施，那就是保障材料。
And they have reactor safety, then they have radiation safety, then they have safeguards which is the security stuff.
读者：如果核辐射得到了遏制，那么在核反应堆它还会存在多久？辐射会通过空气或者海洋扩散到全世界吗？
Readers ask: How long will the radiation be in the reactor area after it is finally contained? Will the radiation spread across the globe via air or sea?
这次因为日本核反应堆的损害而产生的核辐射泄漏让全世界都吓了一跳。
The world holds its breath as Japan's damaged nuclear reactors continue to spew radiation.
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