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转一篇从数理统计角度关于病毒起源的分析& X. Y* S" v, K. U
https://user.guancha.cn/main/content?id=285543&s=fwzwyzzwzbt
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9 {# J9 u* L, v' `/ ]* [0 bRockland County population 325,789 (2019)
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Rockland County COVID-19 cases 9,699 by April 22 Z1 D5 D) I; M
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5 m+ `; z( U7 H/ v. Y' E9699 / 325789 = 2.98% !
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1 J" ]! P% Y: a0 qHow to Get Rid of Bats in the Attic
3 y' U# r& O/ T& f* J2 whttp://www.wildlifeanimalcontrol.com/bats.html
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补充内容 (2020-4-22 23:04):. _& w% F; i% ]# J% M e
There have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.
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