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转一篇从数理统计角度关于病毒起源的分析
s+ e4 S( f: C# {' E7 Khttps://user.guancha.cn/main/content?id=285543&s=fwzwyzzwzbt" ^4 A% `" `! w8 _
; j0 U" K. s3 v: P* M) \3 @/ wRockland County population 325,789 (2019)
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& {, q G( m7 LRockland County COVID-19 cases 9,699 by April 22
$ L- w( I$ C+ F7 o7 t {https://www.lohud.com/story/news ... dnesday/3002554001/
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9699 / 325789 = 2.98% !
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$ O- h) K9 r L( M4 HHow to Get Rid of Bats in the Attic: R3 [1 B4 B6 A1 G( |* K6 d& Z
http://www.wildlifeanimalcontrol.com/bats.html' b- o$ f, C+ b$ `2 X. V
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8 p; ^+ c# D! L, a- L4 S补充内容 (2020-4-22 23:04):% \* Z4 I7 k5 U5 I/ n
There have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.
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