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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)3 L/ O0 N: U% G, B- j
https://www.google.ca/search?sxs ... &sclient=psy-ab1 H; U/ \; B! c) \: ` f
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Rockland County COVID-19 cases 9,699 by April 22* A* t% w# Y$ ~& ^
https://www.lohud.com/story/news ... dnesday/3002554001/
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9699 / 325789 = 2.98% !4 v% P7 L7 U1 F4 u5 r9 C: Q
( t* |7 B' K* L4 M4 X& BHow to Get Rid of Bats in the Attic) z8 Z a$ r% f9 `; |& O- n
http://www.wildlifeanimalcontrol.com/bats.html% Y7 m% |/ l: r" w+ ?. p2 v
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补充内容 (2020-4-22 23:04):
' L! q* b: x5 v( yThere have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.$ V6 S/ G+ T! t q
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