However, that chance is just 1-in-250, 000, Yeomans said.

然而也欧曼斯说，这种可能性是1：25 0,000。

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"We are extremely confident, 100% confident, that this is not a threat," said Don Yeomans, manager of NASA's Near Earth Object Observations program, which makes it its business to know these things.

“我们极其自信，有100%的信心，这不会造成威胁，”姚曼斯博士说，他是NASA近地球物体观测项目的经理，了解这些是他必做工作。

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Said equipment has been properly installed, operated, and maintained by Buyer in accordance with Yeomans recommendations and specifications.

所指的设备都由买方根据美国约曼公司的建议和规定进行正确的安装、运转和维护。

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Twenty years ago, no one would likely have discovered 2012 DA14, Yeomans said.

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It will not be visible to the naked eye, because it's small, "about half the size of a football field, " Yeomans said.

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"The meteor was probably about the size of an SUV, " said Donald Yeomans, manager of NASA's Near-Earth Object Program Office at the laboratory, in Pasadena, Calif.

WSJ: Meteor Creates a Show, No Apparent Damage