Cascadia is what's known as a " megathrust" fault.

卡斯卡迪亚断层被称为“大型逆冲”断层。

The Cascadia Subduction Zone has the potential to produce an earthquake with a magnitude up to 9.3.

卡斯卡迪亚地层潜没带有可能会产生有9.3级的强地震。

For hundreds of thousands of Cascadia residents, " The Big One" isn't a question of if, only when.

对成千上万的卡斯卡迪亚居民来说，“大地震”不是一个是否会发生的问题，而是何时发生的问题。

What is the purpose of the Cascadia Rising drill?

2. Cascadia Rising 钻头的用途是什么？

If the people of the Cascadia region have anything to do with it, they won't be caught unawares.

如果卡斯卡迪亚地区的人有所准备的话，他们就不会被打个措手不及。

D) It keeps haunting Cascadia residents.

D) 它一直困扰着卡斯卡迪亚的居民。

However, we didn't actually discover the Cascadia subduction zone until 1988.

然而，直到 1988 年，我们才真正发现卡斯卡迪亚俯冲带。

In a previous episode he helped us understand why the Cascadia megaquake is likely to be the worst disaster in modern history.

在上一集中，他帮助我们理解了为什么卡斯卡迪亚特大地震可能是现代历史上最严重的灾难。

Think Sumatra in 2004, Tohoku, Japan in 2011, and the Cascadia megathrust quake that's predicted to hit the Northwest US soon.

想想 2004 年的苏门答腊岛、2011 年的日本东北部，以及预计很快将袭击美国西北部的卡斯卡迪亚巨型地震。

The last time a major earthquake occurred along the Cascadia fault was in 1700, so officials worry that another event could occur at any time.

卡斯卡迪亚断层上一次发生大地震是在 1700 年，因此政府工作人员担心随时可能发生下一次地震。