本周的一项研究表明，新冠病毒的传播范围很可能比美国官方数字显示的要广得多。

Blood samples taken from 3,300 volunteers in Santa Clara County showed the true number of COVID-19 cases was at least 50 times higher than the number of confirmed infections in the county, according to the study by Stanford researchers.

斯坦福大学开展的一项研究显示，从圣克拉拉县3300名志愿者身上采集的血液样本显示，该县新冠肺炎病例的实际数量至少比此前官方公布的数量高出50倍。

Santa Clara was among the first areas in the US to tell residents to stay at home to contain the spread of the virus, ordering a shutdown from March 17.

圣克拉拉县是美国首批要求居民居家隔离控制病毒传播的地区之一，并下令从3月17日起实行封锁。

The United States has recorded more than 800,000 confirmed cases of COVID-19 since the start of the pandemic, according to a tally from Johns Hopkins University, with over 45,000 deaths -- the most reported of any country.

据约翰斯·霍普金斯大学的统计，自新冠肺炎疫情开始以来，美国确诊病例已达80多万例，死亡病例超过4.5万例，是报告死亡病例最多的国家。

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