地质学家认为，魔鬼湖湖水溢出流入雪耶里河，在过去四千年中至少发生过两次。
Geologists suspect that the overflow into the Sheyenne has occurred at least twice in the last 4,000 years.
地质学家认为，魔鬼湖湖水溢出流入雪耶里河，在过去四千年中至少发生过两次。
Geologists suspect that the overflow into the Sheyenne has occurred at least twice in the last 4, 000 years.
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