一年后，他们成功地让两个元素的原子核聚变，创造出了他们的首个113号元素原子核，但过了不到千分之一秒，它就衰变了。
A year later, they successfully fused two atomic nuclei from these elements, creating their first nucleus of element 113, but it decayed in less than a thousandth of a second.
这些粒子中的一部分是稳定的并且构成了普通物质，其它的只存在一秒钟的几分之一，然后衰变为稳定粒子。
Some of these particles are stable and form the normal matter, the others live for fractions of a second and then decay to the stable ones.
冰川期中的绝大部分所跨越的是这样一个时期，对于这一时期，没有任何元素能拥有一种恰如其分的衰变率。
Most of the Ice Age spans a period of time for which no element has as appropriate decay rate.
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