关键词：小行星撞地球 shower massive meteors threatens extinction level
[WhenashowerofmassivemeteorsthreatensanextinctionleveleventonEarth,theworld'sgreatestmindsdeviseadangerousplanthatwilltaketheplanetoffitsaxisinordertoavoidtheimpact.][WhenashowerofmassivemeteorsthreatensanextinctionleveleventonEarth,theworld'sgreatestmindsdeviseadangerousplanthatwilltaketheplanetoffitsaxisinordertoavoidtheimpact.]
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