Mount Saint Helens is the most active volcano in the continental US.

圣海伦斯山是美国大陆最活跃的火山。

[Roberto] Mount Saint Helens is particularly unique because it's a fairly new system.

- [Roberto] 圣海伦斯山特别独特，因为它是一个相当新的系统。

This is called an explosive eruption and we've seen it with Mount Etna in Sicily and Mount Saint Helens in the U.S. Explosive volcanic eruptions can be dangerous and deadly.

这称为爆发性喷发，我们在西西里岛的埃特纳火山和美国的圣海伦斯火山看到过这种情况。爆发性的火山喷发危险且致命。