They could start pretending like they're a noble gas.

他们可以开始假装自己是惰性气体。

So maybe there are some solutions for our helium-related problems, but some applications are just going to require a noble gas that's lighter than air and there's only one of those.

因此，我们的氦相关元素的短缺问题可能有解了，但一些应用还需求比空气更轻的惰性气体，这样的惰性气体只有一种。