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转一篇从数理统计角度关于病毒起源的分析
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Rockland County population 325,789 (2019)7 u% I* R: q, @$ B
https://www.google.ca/search?sxs ... &sclient=psy-ab
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Rockland County COVID-19 cases 9,699 by April 22
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" E' M0 W" r) I G% e8 ~9699 / 325789 = 2.98% !
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" u$ k. X, f, O" _' e0 t, WHow to Get Rid of Bats in the Attic& p- D4 a; i$ E1 x- G
http://www.wildlifeanimalcontrol.com/bats.html! h6 H* k/ B4 W# l5 P; h( D7 V- z/ s
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/ k: @, ?# l4 G! L9 t补充内容 (2020-4-22 23:04):
- p- S& ~+ {+ D* E) K/ S7 WThere have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.
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