 鲜花( 170)  鸡蛋( 0)
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转一篇从数理统计角度关于病毒起源的分析% f5 `, I1 z2 S" \+ {
https://user.guancha.cn/main/content?id=285543&s=fwzwyzzwzbt C7 a, C. t; `9 r
' @) n' H$ |2 a8 V6 DRockland County population 325,789 (2019)
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Rockland County COVID-19 cases 9,699 by April 22
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9699 / 325789 = 2.98% !
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: G0 ?& y& K8 s! lHow to Get Rid of Bats in the Attic5 v p6 s/ H- ?( Y% R
http://www.wildlifeanimalcontrol.com/bats.html* |: p/ G. L' X/ D- c* x
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5 i' d" \" n9 A+ B补充内容 (2020-4-22 23:04):
+ h5 ]/ \% T! K4 Z! t, aThere have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.# Y7 p: h1 _' Q7 B4 ]& I$ S
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