The US is running out of money to pay for Covid-19 vaccines, tests and treatments and will be unprepared for any future rise in cases, the White House has warned.
白宫警告称,美国正在耗尽为新冠疫苗、检测和治疗划拨的资金,而且没有对未来任何病例增多的情况做好准备。
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