This contradicts previous ideas which suggest the impact of the asteroid actually precipitated a period of glaciations, Gostin says.
这与早先认为的小行星的撞击实际上加速了结冰期的来临这一说法相矛盾。
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Gostin, who first discovered rocky traces of the asteroid "ejecta" almost 30 years ago, said the asteroid impact occurred during a period of extreme cold.