Several of the most fiercely contested states in the US presidential election showed sharp increases in coronavirus cases on Thursday, pushing the number of infections nationwide to their highest levels since a summer outbreak.
周四，美國總統(tǒng)大選競爭最激烈的幾個(gè)州的新型冠狀病毒肺炎（COVID-19，即2019冠狀病毒病）新增病例數(shù)急劇增加，這使得全美感染人數(shù)升至夏季疫情爆發(fā)以來的最高水平。
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