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转一篇从数理统计角度关于病毒起源的分析, T' v) @( @. \0 ~5 ~% a
https://user.guancha.cn/main/content?id=285543&s=fwzwyzzwzbt
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Rockland County population 325,789 (2019)
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Rockland County COVID-19 cases 9,699 by April 22; A$ W0 o0 o% [7 }
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9699 / 325789 = 2.98% !6 O' B1 F! b& U3 O R& I
5 m. }+ V: o7 E9 V" I4 i! JHow to Get Rid of Bats in the Attic3 a8 G+ @: A) ?+ Z( s
http://www.wildlifeanimalcontrol.com/bats.html
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% h6 D; y3 j& Z$ Y$ p9 S. o补充内容 (2020-4-22 23:04):" ^6 e9 J( C0 c. T6 T* I
There have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.
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