The rest is trapped in glaciers and snowfields.

其他的水源都被冻结在冰川和雪原中。

Of the remaining fresh water, scientists estimate that just one percent is easily accessible. The rest is trapped in glaciers and snowfields.

就余下的新鲜水源而言，科学家估测认为，只有1%的水源是可用的。其他的水源都冻结在冰川和雪原中。

After this discovery I made excursions over all the High Sierra and discovered that what at first sight looked like snowfields were in great part glaciers which were completing the sculpture of the summit peaks.

在这个发现之后，我游览了整个高山脉，发现乍一看像雪原的地方大部分是冰川，它们正在完成山峰的雕塑。