它一直困扰着卡斯卡迪亚居民。
卡斯卡迪亚被称为“大型逆冲”断层。
对于卡斯卡迪亚成千上万的居民来说，“大地震”不是是否会发生的问题，而是何时发生的问题。
For hundreds of thousands of Cascadia residents, "The Big One" isn't a question of if, only when.
上一次沿着卡斯卡迪亚断层发生的大地震是在1700年，所以官员们担心另一场大地震随时可能发生。
The last time a major earthquake occurred along the Cascadia fault was in 1700, so officials worry that another event could occur any time.
卡斯卡迪亚地震带足够大，可以与圣安地列斯（它被称为美国最危险的断层）相媲美，但它的知名度远不及它在加州的表亲。
The Cascadia Earthquake Zone is big enough to compete with San Andreas (it's been called the most dangerous fault in America), but it's much lesser known than its California cousin.
卡斯卡迪亚地震带足够大，可以与圣安地列斯（它被称为美国最危险的断层）相媲美，但它的知名度远不及它在加州的表亲。
The Cascadia Earthquake Zone is big enough to compete with San Andreas (it's been called the most dangerous fault in America), but it's much lesser known than its California cousin.
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