They are the products of geological events 4.5 billion years ago, combined with the accident of having collided with the Earth at several thousand kilometres an hour.
它们是45亿年前地质事件的产物,当时它们以时速数千公里的速度撞向地球。
No cause has been announced for that accident. But some scientists and local officials have blamed the rising reservoir for some, if not all, of the recent geological activity in the region.
对此事件,有关方未做任何解释,但一些科学家和当地官员表示水库水位的上涨是导致该区域近来地质灾难发生的部分原因(即使不是全部)。
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