The experiment I'm alluding to is called water electrolysis.

我刚提到的实验叫做水电解实验。

In water, electrolysis breaks up the H2O molecules into hydrogen and oxygen.

在水中，电解将 H2O 分子分解为氢气和氧气。

Still, some scientists are desperate to make hydrogen energy sustainable, and in recent years, efforts have more than doubled the efficiency of water electrolysis.

尽管如此，一些科学家仍迫切希望使氢能源可持续发展，近年来，他们的努力使水电解的效率提高了一倍以上。