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.

Gostin几乎在30年前第一个发现了小行星“ejecta”留下的岩石痕迹。小行星的撞击是发生在一段极其严寒的时期。

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"Most American citizens would want to come immediately back to the United States for treatment, " Gostin says.

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Lawrence Gostin of Georgetown University Law School thought of those regulations when he heard about this week's case.

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Gostin hopes this case will finally break the logjam on updating the nation's quarantine laws, and that other countries will follow suit.

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