由于他是在中西部发表演讲，他决定先说明美国历史上最严重的地震不是发生在加利福尼亚或阿拉斯加，而是1811年在密苏里州的新马德里。

Since he was speaking in the Midwest, he decided to begin by noting that the most severe earthquake in American history took place not in California or Alaska but at New Madrid, Missouri in 1811.

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1811年12月16日，美国密苏里州新马德里的居民在睡梦中被强烈地震惊醒，没多久又发生了一次很强烈的地震。

On DECEMBER 16th 1811, the residents of New Madrid, Missouri, were startled out of their beds by a huge earthquake, which was quickly followed by a second.

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研究者对圣路易斯（美国密苏里州东部大城市）的两所学校的257名9至15岁学生展开了调查，以研究诸如Xbox ，Gameboy 和iPhone这些设备的影响。

Researchers studied the effect of gadgetssuch as the Xbox, Gameboy and iPhone on 257 students aged 9 to 15 at twoschools in St. Louis.

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