我是瑞秋。斯丁伯格，威尔逊学院的本科生。

I'm Rachel Steinberg, undergraduate of Wilson School.

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不过，据英国阿伯丁皇家学院大卫•乔利和一个研究小组认为，乌克兰博提施撞击地球事件比之前的墨西哥希克苏鲁伯撞击事件要晚5,000年。

But according to David Jolley of King's College in Abaerdeen, U.K. and a team of researchers, Bolytsh slammed into the planet less than 5, 000 years before the giant Chicxulub impact in Mexico.

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