二十年前，我被委任为一名火山学家。如今我仍然对火山的美丽景色以及它们那潜在的巨大破坏力惊愕不已。

I was   (1)  as a volcanologist twenty years ago. After so many years, I am still amazed at their beauty as well as their   (2)   to cause great damage.